Leisure, Travel & Tourism - Mammoth Lakes, California, United States
. ASI is the oldest independently-owned California-based guide service founded in 1979 by the late Bela Vadasz and Mimi Vadasz. ASI has been operating around the world & throughout California including Mount Shasta, the Truckee/Tahoe region and throughout the High Sierra including Mount Whitney, for over 40 years. We are honored to carry on Bela and Mimi's legacy. Combined, we are now able to offer you even more opportunities for climbing, skiing, hiking and avalanche courses throughout California and around the world.
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