There is a one mile trail that we walked to see fossilized burrows, call Daemonelix (pronounced dee-mon-ee-licks), of prehistoric animals that are believed to have been much like today's Prairie Dogs. The Daemonelix are spiral, or cork screw, shaped. Settlers called them "Devil's corkscrews".
The visitor center also has a room with a collection of American Indian artifacts that were donated by James Cook. James Cook owned the land that is now the monument. He was friends with the Lakota and Cheyenne tribes of the area and they gave him gifts which he kept and now make up this display.