Change a water course to prevent undercutting of structures...... never let up, do they?

A water course will alter its own course .... no problem there with helping it along a little .... why would an entire gorge be 'culturally sensitive'?  What was it used for?  Passing through?  Or dancing all day and night in the heat of summer to enter the mental state where every truth is revealed etc ... sort of like fasting and entering the smokehouse for an American Indian after dancing for hours?

I'd guess most people would be hallucinating there.... Guatemalan Death Chili ......