For most climbers, summiting Everest is an unfathomable accomplishment, marking the peak of mountain climbing success.

For American climber Jim Morrison, the trek to the top of Mount Everest's north face was only the beginning of his historic journey: On Oct. 15, Morrison became the first person to ski down Everest's most challenging route, the Hornbein Couloir, a narrow and steep gully just over 1,100 feet below the mountain's summit.

"It's very steep, unrelenting, and technically just really challenging the whole way on the way up, so only five people have ever made it up this route," Morrison said in a live interview with "Good Morning America" on Monday.

The feat is the subject of an upcoming National Geographic documentary which is currently in production.

Morrison took on the

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