Sylvan Pass Reopened After Avalanche Explosive Was Detonated
The road over Sylvan Pass east of the east entrance of Yellowstone National Park reopened Friday evening after the discovery earlier that day of an unexploded device used for avalanche control, a park spokeswoman said.
Avalanche Control Leaves Three Dud Artillery Shells
Only three of more than 100 howitzer shells launched to trigger avalanches failed to explode this winter on Yellowstone National Park's Sylvan Pass.
Heavy, Wet Snow Causing Problems in Yellowstone [PHOTOS]
Warmer Temps + Melting Snow = Park-wide Challenges. Sylvan Pass Slides Delay East Entrance Reopening.