collapse

Piping cave/soil arch in Qamf deposit, Loutzenhizer Arroyo, Delta County, Colorado, April 2007. Photo credit: David Noe for the CGS.

Hazards

July 12, 2018

Collapsible Soils

By Jonathan White, Senior Engineering Geologist, Emeritus At the end of the 19th and beginning of…

A large sinkhole opened in January 2005 at the Ironbridge Development and Golf Course, in the Roaring Fork River Valley, approx. 6 mi. (9.7 km) southeast of Glenwood Springs. Two golf carts inside the structure were lost down the throat of the sinkhole. View is to the northwest, towards the confluence of the Roaring Fork and Colorado rivers at Glenwood Springs. The red cliffs in the background are the Maroon Formation. For scale, note person in white hardhat standing in the snow. Photo credit: Jon White for the CGS.

Hazards

January 17, 2005

Case Study: Roaring Fork sinkhole

[ED: This report from January 17, 2005 was written by Jon White, (Senior Engineering Geologist, Emeritus). Lightly edited for dated…

Hazards

November 20, 1980

Lake Peigneur sinkhole disaster