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Dusk on Yellowstone Lake
Yellowstone Lake covers 132 square miles and sits within a large caldera (or crater) that was formed by a volcano and then carved and filled by glaciers some 14,000 years ago. The lake's 110-mile, tree-lined shore rims the deep blue waters where nearby, moose, waterfowl and other wildlife reside. Streams flowing into the lake provide it and the Yellowstone River with an abundance of fish.