Link to USGS home page.
A natural spring in Prospect Gulch, upper Animas watershed in southwestern Colorado. Its red iron coloring and metals enrichment are caused by ground water coming in contact with naturally occurring minerals present as a result of ancient volcanic activity in the area.
A natural spring in Prospect Gulch, upper Animas watershed in southwestern Colorado. Its red iron coloring and metals enrichment are caused by ground water coming in contact with naturally occurring minerals present as a result of ancient volcanic activity in the area.

Return to The USGS Abandoned Mine Lands Initiative Fact Sheet


Content Information Contact: hbuxton@usgs.gov

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.usgs.gov/themes/factsheet/095-99/redbog.html
Page Contact Information: Ask USGS
Page Last Modified: 25-Sep-2002@10:50