Rescuers in Yellowstone National Park searched the area of Eagle Peak on Sunday in an effort to find a park concession worker who failed to check in at the end of a personal trip, authorities said. The mountain rises 11,358 feet above sea level and is Yellowstone National Park's highest location, according to the service. The Tuesday phone call was the last anyone heard from King, the park service said. In the last three days, temperatures in Yellowstone National Park have bottomed out in the high 20s and struggled to break the 60-degree mark, according to National Weather Service data. The park service said King is 6 feet tall, 160 pounds, has hazel eyes and was wearing glasses, a black sweatshirt and gray pants.

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Persons: Austin King, King, It’s, It's, Crews Organizations: National Park Service, Yellowstone National, Rescuers, Chevrolet Silverado, Park Lodges, National Weather Service, Yellowstone Interagency Communications Center Locations: Eagle, Yellowstone, Howell, Minnesota, Grand Teton, Park, Teton, Wyoming