This avalanche had an unknown trigger which could be attributed to the rock pile above the starting zone. It started as a loose wet point release that entrained more snow eventually depositing 15-'20' of wet debris on the mining road above the town town of Alta.

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Based upon the gouging, long running wet slide in Flagstaff on the afternoon of March 20th, please use cautious consideration when traveling or skiing above roadways, structures, other people.