United States of America
Prehistoric Trackways National Monument is a national monument in the Robledo Mountains of Doña Ana County, New Mexico, United States, near the city of Las Cruces. The monument's Paleozoic Era fossils are on 5,255 acres (2,127 ha) of land administered by the Bureau of Land Management. It became the
100th active U.S. national monument when it was designated on March 30, 2009.
Listen to the audio guide for Prehistoric Trackways National Monument Free on WIP — starts by itself when you arrive, even with the screen off