Overflow from drilling near Parachute has left behind a "waterfall" of frozen gunk and a huge erosion deposit.

By Nancy Lofholm The Denver Post

 "Garden Gulch, a remote ravine north of the town of Parachute, has been the site of four spills and leaks from oil and gas drilling in the past five months.... "

http://www.denverpost.com/news/ci_8696987