(CAMERON PASS, hwy 14, Colo., December 14, 2004) Step 2 of a Snow Trench. Don Davis, of Wilderness Institute of Survival Education, covers the trench with a water proof tarp and then secures three sides with alot of snow, keeping the tarp tight across t
(CAMERON PASS, hwy 14, Colo., December 14, 2004) Step 2 of a Snow Trench. Don Davis, of Wilderness Institute of Survival Education, covers the trench with a water proof tarp and then secures three sides with alot of snow, keeping the tarp tight across t, [431462866] . Denver Public Library Digital Collections, accessed 10/03/2026, https://digital.denverlibrary.org/nodes/view/717716