Perhaps one person per year is killed by a rattlesnake whereas over a thousand are commonly killed in auto accidents.
Bright Angel Trail, South Rim of Grand Canyon runs through Garden Creek Canyon. It was called Cameron Trail after Ralph Cameron. Pre 1924 it did travel it's North Rim namesake.
Warning: heat kills!
Avoid 8am to 5pm over 90 degrees. Prehydrate & stay hydrated.
Avoid Heat Illness - do NOT hike when temps exceed 100 degrees, period.