A.L.
I have been river rafting down in the canyon three different times and thought oh I bet many boaters die from these big rapids.. NOT ... I hiked the Bright Angel Trail out............ and boy oh boy is it tiring and HOT HOT HOT.. which is how most of those who have passed have died.. from dehydration and Sun Stroke... When I was hiking out (beginning at 6am) so as to avoid some heat of the day (hahah) I would see casual hikers coming down the trail with about 8 oz of water.. some with none.. I was shocked.............. you simply cannot hike the desert without water..If they haven't posted signs yet, they should have ones that say BRING WATER............ DRINK WATER.. you'll be glad you did....