The Quarry Exhibit Hall is where you can see a wall of approximately 1,500 dinosaur bones. This includes the remains of numerous species, such as Allosaurus, Apatosaurus, Camarasaurus, Diplodocus, and Stegosaurus. Exhibits, including an 80 foot (24 m) long mural, reveal the story of the many animals that lived in the Morrison environment during the Late Jurassic. This building is open year-round, except on certain holidays. Hours change seasonally.