Pompeys Pillar National Monument

Leashed dogs are welcome on the trails around Pompeys Pillar National Monument. Enjoy the geological features of the Monument site. The Pillar and the cliffs across the river are composed of sandstones and shales. Although no animal or plant fossils have been documented at Pompeys Pillar, significant fossils have been found in similar sandstone beds nearby. Directly north of the Pillar is a viewing area of the Yellowstone River, to which both trails and sidewalks lead. The Yellowstone River meanders and is the longest free-flowing river in the lower 48 states and provides rich, fertile farmland and habitat for many wildlife and bird species. The riparian areas along the river contain several cottonwood community types. Many standing cottonwood trees within the flood plain are estimated to be more than 100 years old. Finally, for those who love a good picnic, there are tables set up throughout the monument. You are also more than welcome to place a blanket on the ground, or in one of our tipis, and have your lunch. The picnic tables are up year-round, so even if the Interpretive Center is closed, folks are still more than welcome to come in and use the area. Visit Website

Or call (406) 969-5380 for more information.