Erupting geysers and Madison River, Midway Geyser Basin - Yellowstone National Park, WY and MT.Yellowstone geysers - Yellowstone National Park, WY. Out of the Rocky Mountain wilderness emerged our first National Park, Yellowstone, established in 1872 to protect its natural wonders for the enjoyment of all. It lies in the northwest corner of Wyoming, edging over into Montana and Idaho. The park was established before those territories became states. Film Size 6X7cm