Park officials say three Danish climbers have been rescued and flown by helicopter off the 17,200-foot high camp on Mount McKinley's west buttress climbing route.
Two of the climbers sustained leg injuries during an avalanche and were unable to walk.
The three mountaineers had set out from the high camp on Sunday.
They were hoping to summit via a non-standard route up the Autobahn slope leading from high camp to Denali Pass. Park officials say they chose the alternative route because of concern over high avalanche danger on the standard route.
After an avalanche swept them several hundred feet, their relatively uninjured companion dragged the other two back to their campsite. They were flown off the helicopter on Thursday after calling for help on an aviation radio.