Teams searching for 2 missing climbers in Alaska find "boot tracks leading" to avalanche

The search continues for two climbers who went missing at the top of a mountain in an Alaska national park. 

Rangers are searching for 34-year-old Eli Michel and Nafiun Awal, 32, who officials believe likely fell while climbing Moose's Tooth, a 10,300-foot mountain near the Ruth Gorge in Denali National Park and Preserve, on Friday, May 5, the National Parks Service said in a news release. 

Search efforts began on Sunday, May 7, after a friend contacted rangers after noticing that the climbers had not checked back on their handheld satellite communicator following their climb, officials said.