On a high altitude ski mountaineering expedition to Nevada Vilcanota in Peru, Mike and Steve Marolt encounter one of the best ski descents of their lives.

Extreme mountaineer, Mike Marolt, helped develop a heated boot insole that works for backcountry ski alpinism and touring.

To deal with turning 50, three backcountry skiers climb over 7,000 ft in a day to climb and ski Illimani, the highest peak in Bolivia’s Cordillera Real.

Backcountry ski ascent of Mustagh Ata peak in China, 13,000 feet of climbing and ski touring.

Technica Agent AT ski boot review for backcountry skiing and ski mountaineering