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FS2004 Scenery--Yellowstone National Park southwest - Old Faithful photoscenery, Wyoming (WY). Yellowstone, which was set aside as a national park in 1872 is the oldest national park in the world. It is known for its many geothermal features, especially Old Faithful Geyser which erupts aproximately every 90 minutes. Yellowstone Lake is one of the largest high-altitude lakes in the US and is centered over the Yellowstone Caldera, the largest supervolcano on the continent. The scenery covers 3500 sq km in 4.7m/pix resolution. By Gottfried Razek.