What's New - June 16, 2009
What a weird June so far. In the past few years May and June have served up a few smokin' hot weeks, but so far the mountains have remained cool and wet. The result is routes that benefit from having snow on them are in unusually good shape right now, whether that is high peaks in the Sierra with snow gullies, or the more obvious one, Mt. Shasta. Read on...>>>
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Mimi Vadasz
Adminstrative Director
AMGA Certified
Ski Mountaineering Guide

Bela G. Vadasz
Technical Director
IFMGA Certified Guide

Member School

Director, Bela G. Vadasz
receives the AMGA
Lifetime Acheivement Award
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ASI was established in 1979 by Bela G. Vadasz and Mimi Maki-Vadasz. We are America's original all-terrain backcountry ski mountaineering, avalanche education and climbing program based in the Sierra Nevada, visiting the greatest ranges of the world. With experiences among the highest mountains in over 15 different countries, ASI's instructors and AMGA and IFMGA certified guides bring a wealth of experience to help coach and lead you to the greatest adventures of your lifetime.
Summer - Offering rock climbing courses at Donner Pass and guided rock climbs at Lover's Leap, climbs of Mt. Shasta and many High Sierra peaks, including North Palisade, Bear Creek Spire, The East Face, East Buttress and the Mountaineer's Route on Mt. Whitney.
Fall - We guide great Sierra ice climbs such as Mt. Dana, the Dana Couloir, the U-notch and the V-notch on North Palisade and Mt. Sill. We visit many of the great ranges of the world including Mexico's Volcanoes, Mt. Blanc, the Matterhorn and the Himalaya.
Winter - We specialize in AIARE Level 1, 2 & 3 Avalanche Courses, Backcountry Skiing, including telemark, randonnée, as well as backcountry snowboarding and winter mountaineering in the immediate Truckee/Lake Tahoe area along with ice climbing in the famous Lee Vining Canyon.
Spring - Enjoy high route ski traverses and ski mountaineering to destinations including Mt. Shasta, The Sierra High Route, the Alpine Col Tour and the Evolution Loop, European Haute Route and ski descents of Mt. Tom, Mt. Whitney, the Palisades and much more.
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| Check out the latest Trip Report of ASI's Sierra High Route adventure... |


"Just finished the Sierra High Route on Peter Leh's trip from East to West. The journey was incredible and rewarding. Peter did a superb job! On many occasions, we remarked how pleased we were to have him as our guide."
- Heather Kirkby
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