You can't know what's around
the corner in a tight canyon, and boulders, steep
rises, walls and other barriers can create a dangerous
situation if you are not familiar with the canyon
and are flying at the wrong altitude.
Always attend trek briefings, held by a trekker
experienced with the route, prior to embarking.
Memorize described landmarks - GPS systems seldom
work deep between canyon walls and should not be
counted on. Stay within visual distance of the person
leading the trek. If there is any uncertainty, begin
a climb out of the canyon and save the trek for
Following this stream looks like easy going, yet
around the next bend to the left is a sheer rock
wall that requires a steep bank in order to avoid.
Exact altitude and speed are required to safely
navigate this river canyon.