Following the perilous work of Air Zermatt, an alpine search and rescue team that operates on the peaks of Switzerland's Matterhorn mountain.

Technology has come a long way since the original Lama helicopter, and Air Zermatt has revolutionized mountain rescues by making journeys safer and more efficient.

During the peak winter season, adrenaline seekers from around the world descend upon the Swiss Valais Alps, creating a relentless cycle for Air Zermatt's crews who field up to 25 rescues a day.

Air Zermatt's teamwork is tested when a skier falls into the darkness of a 30-meter-deep glacial crevasse; the team must pull him out from the depths before the ice shifts and encases him in a frozen tomb.

The Matterhorn and surrounding mountains can be treacherous, but for rescue service Air Zermatt it's home; as rescue veterans, the team have learned to put their emotions aside to get the job done.