This used to be an island during the Ice Age. Do to erosion, it is much smaller today. Back then, the water level was much higher, and it was surrounded by a raging river. | Creator: Matthew Dillon | Source: "Dinosaur National Monument's Steamboat Rock." Matthew Dillon, September 16, 2019. Flickr (CC BY 2.0). https://www.flickr.com/photos/ruggybear/49329504862/.Download Original File
