Hikers descend into Surprise Valley to access the lower canyon through a break in the 400-foot-tall Redwall on the Thunder River Trail in the Grand Canyon outside of Fredonia, Arizona November 2011. The 21.4-mile loop starts at the Bill Hall trailhead on the North Rim and descends 2000-feet in 2.5-miles through Coconino Sandstone to the level Esplanada then descends further into the lower canyon to access Thunder River, Tapeats Creek and Deer Creek.

25 29 years arizona backpack backpacker canyon day eco tourism full length geology grand canyon hiking hiking pole horizontal horizontal landscape non urban scene outdoors rear view rock rock formation scenics tourism tourist tranquil scene two people usa valley young men young women