Why Do Giant Rocks Suddenly Fall From Cliffs?
By Landslide Hazards Program
September 18, 2018
"In Yosemite Valley, rockfalls can happen every four to five days, where boulders that can be larger than your average car or apartment building thunder down steep mountainsides." - Seeker
Media
Sources/Usage: Public Domain. View Media Details
A video filmed in Yosemite National Park discussing rockfalls and what triggers them. Featuring USGS engineer Brian Collins and National Park geomorphologist Greg Stock.