NASA Was Amazed by This Place - Rio Tinto, Huelva, Spain. Planet Mars on Earth - Full 4K 60FPS Tour

I filmed The Río Tinto is a river in southwestern Spain that rises in the Sierra Morena mountains of Andalusia. It flows generally south-southwest, reaching the Gulf of Cádiz at Huelva. The Rio Tinto river has a unique red and orange colour derived from its chemical makeup that is extremely acidic and with very high levels of iron and heavy metals.