[Illustration: The Slide (U. S. Forest Svc.)]
[Illustration: This was level ground before the quake made this
20-ft. scarp. (Mont. Hwy. Comm.)]
[Illustration: Road missing after quake. (Montana Power)]
[Illustration: These massive rocks blocked the road at Yellowstone
Park's Golden Gate after the Earthquake. (Natl. Park Svc.)]
[Illustration: Shook-up road after quake. (USFS)]