Grand Canyon Backpacking Preparations and Training. Fire Valley. 大峽谷背包行,各種前期準備和訓練. 第一站流火谷風光，小試牛刀。

All Kinds of Weather and Trails, 16 Miles in 6.5 Hours of Backpacking Exercise. First Stop, Exploring the Scenic Fire Valley etc.
各種天氣和路況，16英里六個半小時背包演練，等等。