The Largest Cave in the World

2019 Anglo-Malaysian caving expedition to Gunung Mulu National Park in Borneo. Video features two camps in Clearwater Cave System, the largest cave in the world by volume.
For more information on the Mulu Caves Project: www.mulucaves.org/wordpress/
For more detailed information on caving techniques, caving gear, and cave projects, visit my website at: www.derekbristol.com
Caves are delicate and potentially dangerous places. For more information on wild caving, vertical caving techniques, and cave survey, visit the National Speleological Society website:
caves.org
To find a local grotto (caving club) visit:
caves.org/committee/i-o/grott...
White Nose Syndrome (WNS) is a disease that is devastating to bats. To learn more about what you can do to help, along with information on how to properly decontaminate caving gear, visit:
caves.org/WNS/index.shtml
Cave Videography Gear I Use:
Full-frame Low-Light Camera - amzn.to/2TkIUxT
In-Cave Fast Prime Lens (a7iii) - amzn.to/2TnkB27
General Purpose Zoom Lens (a7iii) - amzn.to/2Trc2Uf
Wide Angle Zoom Lens (a7iii) - amzn.to/2Duwuhl
Gimbal - amzn.to/2TKccpT
ND Filter - amzn.to/2PAvBuJ
Soft-Case for Caving (a7iii) - amzn.to/2QanKDA
Tripod - amzn.to/2PVGrvv
Camera Bag - amzn.to/2RZekYT
Helmet-Mounted Action Camera: amzn.to/2qTa0yT
Drone - amzn.to/2PRs7nU
APS-C Run and Gun Camera - amzn.to/2DKTMQU
In-Cave Prime Lens (a6500) - amzn.to/2DuyLZK
General Purpose Zoom Lens (a6500) - amzn.to/2Q5Mgpw
Wide Angle Zoom Lens (a6500) - amzn.to/2Tnl98b
Soft-Case for Caving (a6500) - amzn.to/2OPF6Be
Hard-Case for Wet Caving (a6500) - amzn.to/2DxFOki

[@AdamosDad]

Mammoth Cave 405.00 Brownsville, Kentucky, United States the longest cave. The Clearwater Cave System is considered to be the interconnected cave system with the largest volume in the world. The Hang Son Doong cave in Vietnam has the largest room.

[@reezevlog]

The Sarawak Chamber is the largest cave chamber by area..

[@NeighborhoodCarReviews]

Love that you can hear the bats echo-location clicks!

[@DerekBristol]

Neighborhood Car Reviews Actually, most of that is the echolocating clicks of Bornean Swiftlets.

[@NeighborhoodCarReviews]

@@DerekBristol Oh. That actually makes sense, actually. Still really cool.

[@uintasunderground6245]

Another awesome vid Derek!👍

[@rehamniabaraa8665]

As always ! Wonderful videos 😍

[@DerekBristol]

REHAMNIA Baraa Thanks!

[@TheSodfarmer]

I wouldn't have believed you if he hadn't said: "never say never"...

[@AlexSproul]

Bravo, Derek!
And thanks for the equipment list.
Consider the NSS Video Salon...

[@DerekBristol]

Alex Sproul Yes, I know. Dave has been pestering me for a couple of years now. I just need to make something good. Next summer...

[@apiletal]

Fantastic. Very special trip.

[@ammonacave9265]

I love massive open caves like this. I wish utah had more

[@reezevlog]

it’s The Sarawak Chamber..largest by area..
Miao Room in China is largest by volume..

[@persada7761]

Nice video bruh

[@gammabyte5918]

Quality content

[@garybeasley4885]

Good story! What was the goals of the expedition, never saw that mentioned?

[@DerekBristol]

Gary Beasley This first video in the series gives a little more context about the expedition goals, but on a high level it is science and exploration. th-cam.com/video/FMvl4bd_HNU/w-d-xo.html

[@UndergroundAdventures]

Great video. What lights do you use for example at 2:43 (or 5:37). It is a big chamber and you have a perfect light for filming.

[@DerekBristol]

I'm using a single Zebralight with the full-flood optic. I'm using the MkIV with high CRI LEDs. For most lighting I'm using it on H2 (high, level 2 - about 1,000 lumens). For really big chambers I sometimes boost it to H1 (about 1,600 lumens), but it won't stay on this setting for long. I hold the camera in my right hand and the light in my left to add a little depth to the lighting.

[@UndergroundAdventures]

@@DerekBristol many thanks for your response

[@whiskeyandkittens6999]

Have you been to any Missouri caves ?

[@xxwookey]

I was there in 2003, mostly exploring Cobweb cave, in G. Benerat, and trying to raise the woeful standards of surveying :-) It's a remarkable place. I recognise Hazel, Elaine and Judith in your team, and messrs Tully and Williams. Caving is a small world :-) Very hard to justify the emissions from such long-distance travel these days when you have caves closer to home.

[@DerekBristol]

A great group!

[@ttonAb2]

Is it difficult to get caving permits in the park?

[@DerekBristol]

We were on expedition with a research permit. There are guided trips to Lagangs Cave, Clearwater, Cave of the Winds, Nasib Bagus, and Deer Cave. I think it's fairly easy to visit most of these. Nasib Bagus (Sarawak Chamber) requires good weather.

[@HankMeyer]

What brand are those big yellow backpacks?

[@DerekBristol]

Those are the Petzl Transport 45L packs. I can't really recommend them. They were disintegrating after just a few weeks of use. The bottom panel of one pack completely failed during one of the camp trips. The seams and lower panels of several other packs were on the verge of failing.

[@HankMeyer]

@@DerekBristol is there a similarly sized pack that you would recommend?

[@DerekBristol]

@@HankMeyer Haven't really found a camp pack I'm thrilled with. The GGG Cheve is what I use in Lechuguilla. It's a bit on the large side, but it's a great value. Looking at MTDE. They appear to make a good product and I'm thinking about getting the 60L Sherpa.

[@Alandang.]

That Sơn đồng?

[@keggg1234]

Just wait until you meet somebody with a thick Gaelic influenced accent Derek. English gets a lot more incomprehensible than this!

[@andreasudarsono9118]

👍👍👍

[@williamhoskins2300]

loud , loud ,music!😢

[@gsp49]

I thought Mammoth Cave was the largest?

[@DerekBristol]

Mammoth Cave is the “longest”