In June 2025, Ethan Berman, Sebastian Pelletti and Maarten van Haeren spent ten days climbing and descending the enormous Southeast Pillar of 7,388-meter Ultar Sar in Pakistan—a route that had defied attempts for more than 30 years. Armed with knowledge gained from their expedition to the same peak in 2024—and blessed with a lengthy weather window that arrived just as they completed acclimatization—the trio quickly reached a point higher than any prior team, climbing mostly at night. They then tackled the crux pillar at the top of the route over the next two and a half days and summited on day six out of base camp. The descent of the pillar required more than 70 rappels.
To learn all about this landmark climb and the history of this difficult and dangerous mountain, Cutting Edge host Jim Aikman spoke with Ethan Berman and Maarten van Haeren, as well as Karakoram expert Steve Swenson and American Alpine Journal Editor Dougald MacDonald.
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In June 2025, Ethan Berman, Sebastian Pelletti and Maarten van Haeren spent ten days climbing and descending the enormous Southeast Pillar of 7,388-meter Ultar Sar in Pakistan—a route that had defied attempts for more than 30 years. Armed with knowledge gained from their expedition to the same peak in 2024—and blessed with a lengthy weather window that arrived just as they completed acclimatization—the trio quickly reached a point higher than any prior team, climbing mostly at night. They then tackled the crux pillar at the top of the route over the next two and a half days and summited on day six out of base camp. The descent of the pillar required more than 70 rappels.
To learn all about this landmark climb and the history of this difficult and dangerous mountain, Cutting Edge host Jim Aikman spoke with Ethan Berman and Maarten van Haeren, as well as Karakoram expert Steve Swenson and American Alpine Journal Editor Dougald MacDonald.
Steve House, Matt Cornell and Rob Smith: Single Push on Denali’s Slovak Direct
The Cutting Edge
1 hour 7 minutes 59 seconds
2 years ago
Steve House, Matt Cornell and Rob Smith: Single Push on Denali’s Slovak Direct
With only about a dozen ascents in nearly four decades, the Slovak Direct route on Denali's south face is one of North America's premier hard climbs. Sixteen years after the first ascent, Scott Backes, Steve House, and Mark Twight famously upped the ante by climbing the route in single-push style: bringing no tent or sleeping bags and climbing nearly continuously for 60 hours. Twenty-two years later, in the spring of 2022, the Slovak saw another round of single-push ascents, blazing up the route in less than 24 hours. For this episode, AAJ editor Dougald MacDonald spoke with climbers from all three of these ascents: Steve House, Matt Cornell, and Rob Smith. They talked about the progression in climbing gear and tactics that allowed such amazingly fast climbs, but also about universal aspects of challenges like this that have nothing to do with speed records.
The Cutting Edge is presented by Hilleberg the Tentmaker (hilleberg.com), with additional support from Lowa Boots, Polartec, and Gnarly Nutrition. This podcast is produced by the American Alpine Club.
The Cutting Edge
In June 2025, Ethan Berman, Sebastian Pelletti and Maarten van Haeren spent ten days climbing and descending the enormous Southeast Pillar of 7,388-meter Ultar Sar in Pakistan—a route that had defied attempts for more than 30 years. Armed with knowledge gained from their expedition to the same peak in 2024—and blessed with a lengthy weather window that arrived just as they completed acclimatization—the trio quickly reached a point higher than any prior team, climbing mostly at night. They then tackled the crux pillar at the top of the route over the next two and a half days and summited on day six out of base camp. The descent of the pillar required more than 70 rappels.
To learn all about this landmark climb and the history of this difficult and dangerous mountain, Cutting Edge host Jim Aikman spoke with Ethan Berman and Maarten van Haeren, as well as Karakoram expert Steve Swenson and American Alpine Journal Editor Dougald MacDonald.
