Originally Posted by PatoM
As far as I know, it's the ochre pigment (iron oxide) that's on the rocks...Moreover, the Ochre Canyon is one of the stages you have to go through to reach the top:
It's a GoPro Hero 1.
Pato, the water is orange due to leaching. When it rains over the "Cordillera", the water leaches and carries those minerals ( negative ph caused by volcanic activity)