Also the person camped/slept in a dry river bed which is one of the worst possible places to camp. A flash flood or torrential rain uphill can wash him out in seconds.. and I can see even the company had recommended him to sleep. Really ignorant to put him at risk like that. Always follow the river but maintain distance.

You can see here how dry river beds flood https://youtu.be/oWHvi_tW-rg?t=206