Almost like clockwork, every 60 to 110 minutes, Old Faithful shoots out a jet of steam and hot water up to 184 feet high. In summer the nearby parking lot fills and empties at about the same pace. Yellowstone Superintendent Dan Wenk says, "One of the great fears of every superintendent of Yellowstone is that Old Faithful will stop erupting when they're superintendent." Michael Nichols/National Geographic hide caption

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Michael Nichols/National Geographic

Is Yellowstone National Park In Danger Of Being 'Loved To Death'?

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A bison herd with calves travels through Lamar Valley, Yellowstone National Park. The park has proposed a cull of 1,000 bison, primarily cows and calves, this winter. Neal Herbert/National Park Service/Flickr hide caption

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Neal Herbert/National Park Service/Flickr

Stefan Larsson serves up bison sloppy Joes and juniper-smoked bison tenderloin, which will be offered at the Yellowstone National Park this summer. Each park will have different menus featuring local foods. Maggie Starbard/NPR hide caption

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Maggie Starbard/NPR

Hold The Hot Dog: National Park Visitors Can Feast On Bison Burgers

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