Rocky Mountain Arsenal National Wildlife Refuge in Commerce City, Colorado. These bisons roam free and graze on the land. You can go visit them and drive through 11 miles and see prairie dogs, bison, bald eagles, deer, coyote, owls and more! They have 20 miles of trails that are open year round. Be sure to visit next time you are in Colorado! It’s free! #colorado #travel #bison #bisons #visit #wildlife #refuge #coloradotravel #rockymountain #scenery #scenic #animals #hiking #hikingtrail #trails #drivethrough #denver #traveling