Skiing A First Descent on Vulcan Lautaro

Pushing Boundaries: A First Descent on Vulcan Lautaro

Written by: Jascha Herlihy

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For Thor Retzlaff, skiing isn't just a sport—it's a way of life. Hailing from Truckee, California, Thor has transformed his relationship with skiing from racing gates to park tricks, and now to ambitious backcountry expeditions that challenge the very limits of human endurance.


"So much of my creativity, endurance, and ambition to go do things is the result of being on skis," Thor explains. "Skiing is who I am."

First Descent on Vulcan Lautaro By Thor Retzlaff
Photographer: Matt Tufts

The Uncharted Challenge: Backcountry Skiing in Argentina


When Thor and his longtime adventure partner Matt Tufts set their sights on Vulcan Lautaro, the tallest mountain on the southern Patagonian ice cap, they weren't just planning another ski trip. They were pursuing a mountaineering Holy Grail—a never-before-skied north face that had captured their imagination since their previous Patagonia expedition in 2023.

 Thor Retzlaff sitting on the side of Vulcan Lautaro
First Descent on Vulcan Lautaro By Thor Retzlaff
Photographer: Matt Tufts

The Journey by the Numbers


  • Total Distance: Approximately 150 kilometers of walking, skinning, and winter camping
  • Ski Descent: 32 kilometers
  • Vertical Elevation: 2,324 meters
  • Summit: Vulcan Lautaro's previously untouched north face
Climbing Vulcan Lautaro with Thor Retzlaff
Photographer: Matt Tufts

Conditions: Expect the Unexpected


First descents are a lottery of environmental conditions, and Vulcan Lautaro was no exception. The summit's top section was, in Thor's words, "wretched ice crapola," exactly as they had anticipated from their pre-trip research. But beneath that challenging layer, a surprise awaited: surprisingly good snow on the more direct north face.


"When it comes to first descents, you really do not know what kind of snow you are getting into until you are on it," Thor reflected. The descent offered moments of pure skiing bliss, chalky powder with a soft, cushioned base that made the grueling approach worthwhile.

The Tools For Success


Survival in such extreme conditions comes down to two critical factors: gear and partnership. For Thor and Matt, their most crucial equipment was simple but essential:


  1. Tent
  2. Stove
  3. Boots

And when gale-force winds threatened to derail their expedition by destroying their tent, their partnership was put to the ultimate test. Their advice? "Find the right partner because things will go wrong. And when they do, you'll need someone to hold the tent down so it doesn't blow away."

Making food while on a glacier , Jetboil stove and Renoun Endurance 98 skis
Photographer: Matt Tufts

Dining on the Edge


Gourmet dining takes on a different meaning in the wilderness. Their culinary highlight was surprisingly luxurious—homemade freeze-dried meals prepared by a local friend in El Chalten, heated up on a JetBoil. "Truly 5-star dining on ice," Thor chuckled.

Eating while ski touring or ski mountaineering with Renoun Skis
Winter camping meals while in a tent and eating fresh stew
Photographer: Matt Tufts

The Essence of Adventure


This expedition wasn't just about skiing an untouched line. It was a testament to human resilience, preparation, and the unbreakable spirit of exploration. For Thor, it was another chapter in a lifelong love affair with skiing, a passion that has shaped his identity and continues to push him beyond known boundaries.


Renoun Skis celebrates athletes, like Thor, who don't just ski the mountain, they communicate with it.

Jascha Herlihy

Jascha was born in raised in Vermont's Mad River Valley on the slopes of Sugarbush Resort. You can now find her skiing all over the west from Alta, Mt. Hood, Whistler and everywhere in between. She's been critical in the testing of Renoun skis around the US. 

Favorite trail snack: Scandinavian Swimmers, specifically the lobsters.