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EARTHQUAKES!

Compression of Fence, Hebgen Lake, Montana

Earthquake of August 18, 1959, Hebgen Lake, Montana. The magnitude 7.1 earthquake killed 28 people and caused 11 million property damage. [GROUND DEFORMATION-COMPRESSION] This snake-like fence at Culligan's ranch (about 1 km east of Red Canyon entrance and less than 20 km from the Montana epicenter) is a result of compression as soils moved downhill during the quake. Movement along a fault running through the Culligan's property damaged practically all the buildings. Photograph Credit: U.S. Geological Survey (J.R. Stacy).