The geology is absolutely stunning. Thank you for your explanation of the various features and their origins. Some of the current formations look like miniature mountain ranges. ❤🇦🇺🇳🇿
What an incredible formation and such a great way to tell the story as well. I love the attention given to features of the world that many people may not even notice.
Thanks guys, I’ll to visit one day. It would be interesting to have some litmus paper to compare the ph of the water in one of the depressions with plants growing, and one of the clean ones.
Thank you, I’ve really enjoyed your videos. When I was training to be a park ranger we had a lovely man from the regional council that would take us out on field trips around auckland he showed some amazing geological features etc. To reflect those opportunities many years later they we’re so unique and special. 1:38
The geology of New Zealand is mind boggling ..... I lived on the north island for two years and spent most of it wishing I was a geologist. Great video!
Julian deserves all the thanks - he does all the work videoing and then putting the whole story together from several hours of filming. All I do is stand there and talk and walk away.
Great video as always! I did first-year geology at Vic University in 1980 and had Dr Cole (volcanology) as a lecturer - he was great! I think he's at University of Canterbury now.
You remind a bit of Lloyd Esler from Invercargill, I had the privilege of him visiting my school when I was little, such a nice guy with some absolutely fascinating knowledge to share. Your videos have got me wanting to explore a bit more, not just the places everyone knows about but the more obscure places that are every bit as beautiful as the rest of our country. We really are blessed with our wilderness here, such a shame many of us don’t appreciate the gift it truly is living in New Zealand.
I'm supposing the basalt ridge is an example of topographic inversion. The lava that became that ridge originally flowed down a valley - it was then at the lowest level of the topography at the time. The material around and above the basalt was more easily eroded and so now the solidified lava flow is at the highest level of the local topography (until it all breaks up and flows down).
Great video. I live in New England USA and I wish there was a geologist who made excellent TH-cam videos, and explained the interesting and sometimes inscrutable geology of New England, as well as you. Explain the rocks and geology of New Zealand. Thanks!
Yes, a fair bit of basalt karst around Rangiahua. Other places with wonderful basalt karst in northern NZ include: Lake Manuwai (Kerikeri), Puhipuhi, Kaiikanui Rd, Maungatapere, Matarau, Ti Pt, Stony Batter (Waiheke).
I'll have another geeze in case I missed it, but If you guys haven't - any chance of a Mt Tarawera / P&W Terraces video? The only thing I remember about the place was running down the scree from the summit. I was too much of a school boy caring about social appearance back then so I didn't pay too much attention on the trip , sadly. AH WELL. You live and THEN you learn, I guess ;)
We have some wonderful rock formations around Te Kuiti. I would love to hear Bruce’s explanation as to how they came about. I could listen to him talk for hours 🤩 fan girl hard
2:07, How might these have happened, fluted Basailt formation. Hello im from the Bay of Plenty, my name is Dean That is very interesting actually, because as you say, it' is not limestone. Here's my opinion on how these could have ended up in this situation. Basalt is extremely hard, however when a bunch of hexagon shaped pillars, (such as seen in different areas of the country, one in Dunedin and one i found when on the Corromandel peninsula), It is my opinion that they're the melted down and liquefied once hexagonal basalt columns. And this is where it gets interesting, because i have been trying to figure out how a bunch of basalt structure has characteristics like flora fibres from something massively big like an old tree stump. There's a video called "there are no forest on earth" . Im not sure of the authors name, so i can't help you there, It does seem to suggest that the devil towers in Arizona is an old tree stump, and the editing shows comparisons, that do seem to have logic. So yes my opinion lends itself to looking at this example and seeing that possibly these now molten blobs, that were once hexagonal fibres of something far bigger than the average sized Flora we see today. It could be from the dinosaur period for all we know. Now I feel a big question has been answered, and I thank-you for sharing this out. Truely im grateful to other people who have similar interests, it's good to hear others opinions, its like a sounding board where everyone can participate and get involved. Cheers salutes to you.
I'm truly glad i was lying down to watch that one - absolutely bonkers. What a place... if i weren't so anal about my carbon footprint i'd pack the cameras into the car and be on my way North tonight. Thanks so much for what you're bringing to us - your work is Worthy. All the best from Mt Messenger.
Fascinating, thank you. Presumably a warmer climate also contributed to the humic acid process? For example, the Sub-Antarctic Islands are basaltic, yet they don't show any karst processes? Water and warmth tend to have severe effects on rock!
Great video! If you get the chance, check out St Paul's rock in Whangaroa on the east coast and Taratara which is not too far away from there aswell. The rock formations that dominate the scenery around Whangaroa Harbour are remnants of ancient volcanoes that erupted about 20 million years ago. Angular fragments of the volcanic rocks were scattered thickly over the landscape and sea.
Hunted around those boulders,saw the biggest boar I have ever seen up there with my daughter,thing just got slowly up and wandered off,eyeing us over the goat kid it was munching on.bloody creepy in some of those formations…
Fascinating as always. Two thoughts come to mind watching this. 1) how often have I seen and walked past or flown over geologic formations and not even crossed my mind how they were formed. 2) I wonder what the oldest geologic formation is that exists today that has been basically the same for longest time. Is a crater? A volcano? Or perhaps something like Ularu?
Probably the Makhonjwa mountains in South Africa, a roughly 3 billion year old mountain range. South Africa and Western Australia are your best bet for exceedingly old and well preserved geologic features!
@@StuffandThings_ thanks. Looking them up. And yeah I figured that would make sense given how stable the land is here in Australia compared to what I was used to growing up with earthquakes and volcanoes in NZ.
Another interesting video on a place i know well. I was a bulldozer contractor and that was my home territory. An observation that may not be related but its what i saw when making a fenceline on the adjoining property and observable through the Horeke road gorge over the decades was that that rock type had an unusual character in the way the crystals decomposed and the rock at times shedded layers sort of like an onion. Very different from the Taheke basalt that I lived on at the other end of the road that was lava from Kaikohe Bay of islands field. Maybe just a century later outworking of the erosion effects of the plant and bush conditions. All interesting..
So interesting. Definitely first time I’ve heard of corrosion having a specific effect on basalt. Definitely not an easy one to erode. There is eroded Basalt in the area where I live but it’s main effect is typical breakdown erosion here. Turning it into smaller rocks band eventually soil sized particles. That humic acid must be some pretty tough acid. Was it the mixture of the specific plants growing atop the basalt mixing with water that generated the acid?
I wonder if the unique character of NZ's subtropical forest played a part in this. IIRC all the conifers there actually create some subtropical podosols (which are quite acidic), an extremely rare phenomena globally. Add to that the consistently high rainfall (even in cooler times) and you have the perfect recipe for this. One more bit of unique NZ geology to add to the already large list! I kind of suspect that lots of northern NZ's basalts have some erosion like this.
Yes others have suggested that kauri forest was essential for the basalt to be corroded like this. But I am not convinced. There is similar karst basalt on Norfolk Island where there is no kauri and there are karst boulders at Mt Pirongia, Waikato. which is south of the current limit of kauri growth and certainly too cool throughout the cooler temps of the last 100,000 yrs. Yes kauri podzolise the soil creating more acidic conditions, but all evidence is that the fluting and basins formed on the surface of the exposed boulders and there is no such features where they were in contact with the soil underneath and on the lower sides.
@@BruceHayward1 Norfolk has the Norfolk pine, an Araucaria (same family as Kauri). So that still checks out. Plus, I was suggesting conifers in general, podocarps should still do the trick and during glacial periods they had a distribution similar to today's Kauri forest.
The boulders slowly migrating down the slope as the soil softens in winter: has this been confirmed by careful surveying? The boulders often have large flat faces, which suggests to me that the original lava flow had quite a flat top surface. Also, the boulders are quite solid, without voids or randomly oriented slabs inside them. Does this indicate that the original lava flow was formed quickly from hot liquid lava, rather than the slow lava flows full of broken chunks?
Such surveying could take some years and maybe someone will do it. However, Felix, the farmer there for many decades told me how he had noticed how some of the boulders in the paddocks were moving downhill a few cm to tens of cm every winter. Remember that today the hillsides are mostly grass whereas for most of its history the hillsides would have been forested and one would expect movement of the boulders would have been much slower when they encountered large trees. Note how the boulders on the hillside in the video almost all have vertical fluting that indicates they have retained their orientation for a long time. The original lava flow possibly had a more rubbly, vesicular surface but this would probably have weathered to clay and eroded off down to the inner, denser, weakly columnar-jointed part of the flow as can be seen in the large rock at the top of the hill. I see you are referring to the fast moving pahoehoe flows compared with the cooler slower moving a'a flows with blocky surfaces. Both types if thick enough (as in this case) would cool and solidify on the inside quite slowly (years) about the same speed and produce the dense basalt lava rock we have here.
There is no need for the epiphytes to be in the trees when the same plants actually grew on top of most boulders when they were in the forest in pre-clearance times. The humic acid develops and sits there on top of the boulder in the decaying humus around the plant roots rather than dripping onto a boulder surface and rapidly evaporating.
Oh cool, that only makes me want to visit that region even more. Can't seem to find any good info about the distribution of these but I suspect that they exist in some form all over the northern North Island anywhere there's basalt.
@@StuffandThings_ I have mapped the distribution of basalt karst in northern NZ and we do not know any south of Pirongia-Karioi and NE Coromandel Peninsula. Yes there are a number of places on the older basalt flows of the Kaikohe-Bay of Islands basalt field and the Puhipuhi field, as well as the ~19 myr old basalt at Ti Pt, Waiheke and Mercury Bay - but none is known to have developed on the Auckland basalts that are all younger than 200,000 years. All seems to point to taking a long time to develop - certainly 10s of thousands of yrs. Overseas it was also well developed in one place on Norfolk Island but all those are now used to decorate gardens and traffic islands. There is one old mention of an example in Hawaii but I know of no others - so basalt karst is extremely rare internationally.
How about the lava ran over fluted limestone as a mold and left that impression . With the same erosion effects , only now your looking at the under side .?
For this explanation you need to first make the mold and then make a cast of it as the tops of the boulders are not the reverse of what you get on the top of some limestone karst boulders but the actual bowl shapes etc.
@@BruceHayward1 If they have collapsed over time and the limestone being the weaker rock thus eroding sooner or completely how do you know the top has always faced up . The lava would filled the flutes so that is the mold , a reverse image .That has just ended facing up (top) . If they have tumbled down the hill like a collapsed cavern .The top of the lava was the outside roof , fluted side is the ceiling or inside of the roof which is now facing up.Boy that hurt the head , anyway you take care and keep smiling .
@@anthonyjackson3907 I like your thinking, as we know lava does make molds of things it come in contact with, such as the tree molds in the lava flows at Takapuna Reef (see our video) or at Ambury Park in Auckland. But unfortunately that explanation does not work in this instance for many reasons. Great to have viewers feedback with other ideas.
As a mear human, it boggles the mind , in terms of time and how long this took, If we only had a timelapse of this weathering . reminds me of this wee film, (Das Rock - About two Rock characters and their adventures) and the passing of time, 😜😜 haha I didn't get it at first. th-cam.com/video/HOPwXNFU7oU/w-d-xo.html
What a load of nonsense! This fluting is clearly made by the bird woman's talons as she tried clawing Hatupatu out from his hiding place in the rocks! 🤨
the process sounds so obvious once it is explained by Bruce, his enthusiasm makes for a very enjoyable video
Hear! hear!
What an amazing glimpse into deep time. Fascinating video
@@AutomaticBadger thank you
The geology is absolutely stunning. Thank you for your explanation of the various features and their origins. Some of the current formations look like miniature mountain ranges.
❤🇦🇺🇳🇿
@@stephanieyee9784 they do!
What an incredible formation and such a great way to tell the story as well. I love the attention given to features of the world that many people may not even notice.
Thank you
These videos make me look at NZ landscape in a completely different way.
I am also using them to make a list of places I want to visit
Excellent!
Thank you for sharing such interesting and obviously passionate videos. You've turned me into somewhat of an amateur geologist.
That's great!
I loved this, great stuff!
Glad you enjoyed it!
Thanks Bruce always a pleasure to see more of your beautiful country!
That was excellent.
Cheers!
Fascinating as always! Thank you Bruce.
Another great video
Thank you
Thanks guys, I’ll to visit one day. It would be interesting to have some litmus paper to compare the ph of the water in one of the depressions with plants growing, and one of the clean ones.
Thank you, I’ve really enjoyed your videos. When I was training to be a park ranger we had a lovely man from the regional council that would take us out on field trips around auckland he showed some amazing geological features etc. To reflect those opportunities many years later they we’re so unique and special. 1:38
The geology of New Zealand is mind boggling ..... I lived on the north island for two years and spent most of it wishing I was a geologist. Great video!
@@Ecka63 thanks for your appreciation
Fascinating. Thanks Bruce.
Julian deserves all the thanks - he does all the work videoing and then putting the whole story together from several hours of filming. All I do is stand there and talk and walk away.
Atom by atom, the mountain reached the sea.
Always a delight to see a new video!
Thanks!
It's quite a skill to make such a dry subject so engaging. Glad I subscribed now.
Welcome aboard!
Fantastic. Thank you so much!
You're very welcome!
Great video as always!
I did first-year geology at Vic University in 1980 and had Dr Cole (volcanology) as a lecturer - he was great!
I think he's at University of Canterbury now.
Great video..informative and beautifully pesented 👍👍👍
Your films are always interesting subject matter!
Thanks!
You remind a bit of Lloyd Esler from Invercargill, I had the privilege of him visiting my school when I was little, such a nice guy with some absolutely fascinating knowledge to share.
Your videos have got me wanting to explore a bit more, not just the places everyone knows about but the more obscure places that are every bit as beautiful as the rest of our country. We really are blessed with our wilderness here, such a shame many of us don’t appreciate the gift it truly is living in New Zealand.
@@subiemad6073 thank you. That's great, just what these videos are for, to encourage exploration.
Really, really interesting. Thank you. Fascinating that we have that in this country.
This is amazing. Great job!
Thank you!
Love seeing such informative videos about NZ geology! Bruce is an amazing teacher and his passion is evident. Thanks for sharing! Ka pai
@@oscarwebb2149 thanks!!
Absolutely fascinating! Thank you so much for these videos.
Our pleasure!
Wow that was really interesting, thanks for sharing
Pleasure!
Another fine video! Thanks to both of you for making it happen.
@@fredio54 thank you!
NZ has an amazing variety of different formations. These wonderful videos make me proud to be a Kiwi.
How great is that!
Good work!..
@@geofflewis8599 thanks
I'm supposing the basalt ridge is an example of topographic inversion. The lava that became that ridge originally flowed down a valley - it was then at the lowest level of the topography at the time. The material around and above the basalt was more easily eroded and so now the solidified lava flow is at the highest level of the local topography (until it all breaks up and flows down).
Yes, quite possibly, but erosion has now progressed so far that any hint at the pre-lava flow topography is gone in this area.
Great video. I live in New England USA and I wish there was a geologist who made excellent TH-cam videos, and explained the interesting and sometimes inscrutable geology of New England, as well as you. Explain the rocks and geology of New Zealand.
Thanks!
Thanks for watching!
Was here recently, Bruce should take a trip to White Road as well! traces of hexagonal jointing alongside the basalt karst forms!
Yes, a fair bit of basalt karst around Rangiahua. Other places with wonderful basalt karst in northern NZ include: Lake Manuwai (Kerikeri), Puhipuhi, Kaiikanui Rd, Maungatapere, Matarau, Ti Pt, Stony Batter (Waiheke).
This geological feature is incredible!
What I wouldn't give to be able to walk New Zealand with a Geologist.
I'll have another geeze in case I missed it, but If you guys haven't - any chance of a Mt Tarawera / P&W Terraces video? The only thing I remember about the place was running down the scree from the summit. I was too much of a school boy caring about social appearance back then so I didn't pay too much attention on the trip , sadly.
AH WELL. You live and THEN you learn, I guess ;)
@@PureCoKayne good one to put on the list!
A fascinating place and a beautiful landscape. I wish I could live there. 😉
It really is!
We have some wonderful rock formations around Te Kuiti. I would love to hear Bruce’s explanation as to how they came about. I could listen to him talk for hours 🤩 fan girl hard
2:07, How might these have happened, fluted Basailt formation. Hello im from the Bay of Plenty, my name is Dean
That is very interesting actually, because as you say, it' is not limestone. Here's my opinion on how these could have ended up in this situation.
Basalt is extremely hard, however when a bunch of hexagon shaped pillars, (such as seen in different areas of the country, one in Dunedin and one i found when on the Corromandel peninsula), It is my opinion that they're the melted down and liquefied once hexagonal basalt columns. And this is where it gets interesting, because i have been trying to figure out how a bunch of basalt structure has characteristics like flora fibres from something massively big like an old tree stump.
There's a video called "there are no forest on earth" .
Im not sure of the authors name, so i can't help you there,
It does seem to suggest that the devil towers in Arizona is an old tree stump, and the editing shows comparisons, that do seem to have logic.
So yes my opinion lends itself to looking at this example and seeing that possibly these now molten blobs, that were once hexagonal fibres of something far bigger than the average sized Flora we see today. It could be from the dinosaur period for all we know.
Now I feel a big question has been answered, and I thank-you for sharing this out. Truely im grateful to other people who have similar interests, it's good to hear others opinions, its like a sounding board where everyone can participate and get involved. Cheers salutes to you.
Thanks for your comment and appreciation
It's always mind blowing what erosion can do to the landscape and rocks.
It is!
I'm truly glad i was lying down to watch that one - absolutely bonkers. What a place... if i weren't so anal about my carbon footprint i'd pack the cameras into the car and be on my way North tonight. Thanks so much for what you're bringing to us - your work is Worthy. All the best from Mt Messenger.
Thanks for your enthusiasm!
@@OutThereLearning I'm calming myself with a good single malt. Cheers.
Climate change happens we don’t have anything to do with it. Any fanatic can’t be reasoned with. Idiots.
Cool, I grew up around there
Love these videos about the building blocks of Aotearoa ♥ Kia kaha ehoa ♥
Fascinating, thank you. Presumably a warmer climate also contributed to the humic acid process? For example, the Sub-Antarctic Islands are basaltic, yet they don't show any karst processes? Water and warmth tend to have severe effects on rock!
Yes, I suspect the slightly warmer conditions of northern NZ and Norfolk Island, esp during the interglacials may have promoted this process.
Incredible
Great video! If you get the chance, check out St Paul's rock in Whangaroa on the east coast and Taratara which is not too far away from there aswell. The rock formations that dominate the scenery around Whangaroa Harbour are remnants of ancient volcanoes that erupted about 20 million years ago. Angular fragments of the volcanic rocks were scattered thickly over the landscape and sea.
Hunted around those boulders,saw the biggest boar I have ever seen up there with my daughter,thing just got slowly up and wandered off,eyeing us over the goat kid it was munching on.bloody creepy in some of those formations…
Fascinating as always. Two thoughts come to mind watching this. 1) how often have I seen and walked past or flown over geologic formations and not even crossed my mind how they were formed.
2) I wonder what the oldest geologic formation is that exists today that has been basically the same for longest time. Is a crater? A volcano? Or perhaps something like Ularu?
It's a great thing to keep your mind active with questions!
Probably the Makhonjwa mountains in South Africa, a roughly 3 billion year old mountain range. South Africa and Western Australia are your best bet for exceedingly old and well preserved geologic features!
@@StuffandThings_ thanks. Looking them up. And yeah I figured that would make sense given how stable the land is here in Australia compared to what I was used to growing up with earthquakes and volcanoes in NZ.
Another interesting video on a place i know well. I was a bulldozer contractor and that was my home territory. An observation that may not be related but its what i saw when making a fenceline on the adjoining property and observable through the Horeke road gorge over the decades was that that rock type had an unusual character in the way the crystals decomposed and the rock at times shedded layers sort of like an onion. Very different from the Taheke basalt that I lived on at the other end of the road that was lava from Kaikohe Bay of islands field. Maybe just a century later outworking of the erosion effects of the plant and bush conditions. All interesting..
Thank you indeed,
Amazing
Thanks!
So interesting. Definitely first time I’ve heard of corrosion having a specific effect on basalt. Definitely not an easy one to erode. There is eroded Basalt in the area where I live but it’s main effect is typical breakdown erosion here. Turning it into smaller rocks band eventually soil sized particles. That humic acid must be some pretty tough acid. Was it the mixture of the specific plants growing atop the basalt mixing with water that generated the acid?
Where is this location?
A single map would have been fantastic.
@@alanseymour1252 Thanks for your comment. Search Google maps? Wairere Boulders, Hokianga
thats cool
Is this erosion process also called Rillenkarren?
Yes, the features around 5.45 could be called this, but of course this is in basalt, which is extremely rare globally.
Always thought it was the sap from Kauri trees which caused the fluting and erosion!
Must... Climb...
What is the chemical composition of the basalt? Is it high in carbonates?
No carbonate whatsoever in basalt - none of the constituent minerals are generally considered soluble in water.
@@BruceHayward1 Thanks!
@@BruceHayward1 thanks
I wonder if the unique character of NZ's subtropical forest played a part in this. IIRC all the conifers there actually create some subtropical podosols (which are quite acidic), an extremely rare phenomena globally. Add to that the consistently high rainfall (even in cooler times) and you have the perfect recipe for this. One more bit of unique NZ geology to add to the already large list! I kind of suspect that lots of northern NZ's basalts have some erosion like this.
Yes others have suggested that kauri forest was essential for the basalt to be corroded like this. But I am not convinced. There is similar karst basalt on Norfolk Island where there is no kauri and there are karst boulders at Mt Pirongia, Waikato. which is south of the current limit of kauri growth and certainly too cool throughout the cooler temps of the last 100,000 yrs. Yes kauri podzolise the soil creating more acidic conditions, but all evidence is that the fluting and basins formed on the surface of the exposed boulders and there is no such features where they were in contact with the soil underneath and on the lower sides.
@@BruceHayward1 Norfolk has the Norfolk pine, an Araucaria (same family as Kauri). So that still checks out. Plus, I was suggesting conifers in general, podocarps should still do the trick and during glacial periods they had a distribution similar to today's Kauri forest.
The boulders slowly migrating down the slope as the soil softens in winter: has this been confirmed by careful surveying?
The boulders often have large flat faces, which suggests to me that the original lava flow had quite a flat top surface. Also, the boulders are quite solid, without voids or randomly oriented slabs inside them. Does this indicate that the original lava flow was formed quickly from hot liquid lava, rather than the slow lava flows full of broken chunks?
Such surveying could take some years and maybe someone will do it. However, Felix, the farmer there for many decades told me how he had noticed how some of the boulders in the paddocks were moving downhill a few cm to tens of cm every winter. Remember that today the hillsides are mostly grass whereas for most of its history the hillsides would have been forested and one would expect movement of the boulders would have been much slower when they encountered large trees. Note how the boulders on the hillside in the video almost all have vertical fluting that indicates they have retained their orientation for a long time.
The original lava flow possibly had a more rubbly, vesicular surface but this would probably have weathered to clay and eroded off down to the inner, denser, weakly columnar-jointed part of the flow as can be seen in the large rock at the top of the hill. I see you are referring to the fast moving pahoehoe flows compared with the cooler slower moving a'a flows with blocky surfaces. Both types if thick enough (as in this case) would cool and solidify on the inside quite slowly (years) about the same speed and produce the dense basalt lava rock we have here.
I wonder if, under an ancient canopy dropping epiphytes onto the boulders below that maybe a biproduct of those epiphytes created the flutes?
There is no need for the epiphytes to be in the trees when the same plants actually grew on top of most boulders when they were in the forest in pre-clearance times. The humic acid develops and sits there on top of the boulder in the decaying humus around the plant roots rather than dripping onto a boulder surface and rapidly evaporating.
Could be Moriori stone carving .
Could the same thing happen with Andesite..Thanks for great explanation
Possibly, but have not seen any good examples.
Whangaroa got the specimens ✌️
Oh cool, that only makes me want to visit that region even more. Can't seem to find any good info about the distribution of these but I suspect that they exist in some form all over the northern North Island anywhere there's basalt.
@@StuffandThings_ I have mapped the distribution of basalt karst in northern NZ and we do not know any south of Pirongia-Karioi and NE Coromandel Peninsula. Yes there are a number of places on the older basalt flows of the Kaikohe-Bay of Islands basalt field and the Puhipuhi field, as well as the ~19 myr old basalt at Ti Pt, Waiheke and Mercury Bay - but none is known to have developed on the Auckland basalts that are all younger than 200,000 years. All seems to point to taking a long time to develop - certainly 10s of thousands of yrs.
Overseas it was also well developed in one place on Norfolk Island but all those are now used to decorate gardens and traffic islands.
There is one old mention of an example in Hawaii but I know of no others - so basalt karst is extremely rare internationally.
How about the lava ran over fluted limestone as a mold and left that impression . With the same erosion effects , only now your looking
at the under side .?
For this explanation you need to first make the mold and then make a cast of it as the tops of the boulders are not the reverse of what you get on the top of some limestone karst boulders but the actual bowl shapes etc.
@@BruceHayward1 If they have collapsed over time and the limestone being the weaker rock thus eroding sooner or completely how do you know the top has always faced up . The lava would filled the flutes so that is the mold , a reverse image .That has just ended facing up (top) . If they have tumbled down the hill like a collapsed cavern .The top of the lava was the outside roof , fluted side is the ceiling or inside of the roof which is now facing up.Boy that hurt the head , anyway you take
care and keep smiling .
🙂
@@anthonyjackson3907 I like your thinking, as we know lava does make molds of things it come in contact with, such as the tree molds in the lava flows at Takapuna Reef (see our video) or at Ambury Park in Auckland. But unfortunately that explanation does not work in this instance for many reasons. Great to have viewers feedback with other ideas.
A guest appearance by a Piwakawaka.
@@theunknownunknowns256 yes!
As a mear human, it boggles the mind , in terms of time and how long this took, If we only had a timelapse of this weathering . reminds me of this wee film, (Das Rock - About two Rock characters and their adventures) and the passing of time, 😜😜 haha I didn't get it at first. th-cam.com/video/HOPwXNFU7oU/w-d-xo.html
You are sadly mistaken, Planet Earth is Less than 10,000 Years old, and most of this activity likely took place during Noah's Flood 4,500 Years ago.
What a load of nonsense! This fluting is clearly made by the bird woman's talons as she tried clawing Hatupatu out from his hiding place in the rocks! 🤨
@@tomobedlam297
Kurangaituku was kind enough to feed Hatupatu and then he stole all her stuff 😂.
@@tomobedlam297 only fools reject "The Creator's Plan" and ignore "His Word of True History".