DENVER (KDVR) — A high altitude rescue involving a Blackhawk helicopter occurred Wednesday morning at Snowmass Lake, after a 17-year-old was reported to be suffering from possible altitude sickness and later "began to foam from the mouth."

Around 7 a.m., the Pitkin County Sheriff's Office said, Pitkin County Regional Emergency Dispatch Center received the initial phone call about the 17-year-old in Snowmass Lake, an 8.5-mile hike by foot, located about 13 miles from Aspen, with an altitude of 10,800 feet.

Mountain Rescue Aspen then began communication with people in Snowmass Lake, who had access to a Garmin inReach, a GPS and satellite communicator, about the teen's condition, which was initially reported as the teen had asthma and was currently experiencing symptoms of altitude sickness. As rescuers began to deploy, there was a report that the teen had begun to foam at the mouth.

The Colorado Search and Rescue Association and a Blackhawk helicopter from the High-Altitude ARNG Aviation Training Site coordinated with MRA, where a hoist-rescue technician from MRA got to the sick teenager, performed a field medical evaluation and then "hoisted the teenager into the Blackhawk."

The teen was flown to Sardy Field and after landing, was then transported by ambulance to Aspen Valley Health - Hospital and Medical Center.