This online atlas provides a wide array of maps of the natural and socio-economic features of the Greater Yellowstone Ecosystem and surrounding areas. The maps are made from GIS layers, and users can select from many types of information such as satellite imagery and topographic maps. Map areas include Yellowstone National Park, Grand Teton National Park, the Bridger-Teton National Forest, Gallatin County, and several other areas. A list of additional web resources with metadata is also provided.