Search and rescue personnel enter a helicopter to look for Yellowstone employee Austin King from the air. (Yellowstone National Park Flickr)

MAMMOTH HOT SPRINGS, Wyo. — The search continues for Yellowstone National Park employee Austin King, who went missing in the park last week.

King, 22, was last heard from on Sept. 17, when he called friends and family from the summit of Eagle Peak.

Since Saturday, 85 emergency personnel, two helicopters, a search dog team and an unmanned aircraft have focused efforts on the high-elevation, expansive and hazardous area around Eagle Peak. Searchers report accumulations of snow and ice with 6-foot drifts on the peak.

Teams will continue to search for the next several days, with conditions expected to improve due to favorable weather forecasts.

King is described as roughly 6 feet tall, weighing about 160 pounds, with brown hair, hazel eyes and glasses. He was last seen wearing a black sweatshirt and gray pants. Anyone with information regarding King’s whereabouts is asked to contact the Yellowstone Interagency Communications Center at 307-344-2643.