Witnesses said he was with friends Monday, went beyond a barrier onto a snow bank at an overlook, fell headfirst and slid partway down the 700-foot wall toward the lake.
The lake was formed more than 7,000 years ago when a volcano named Mount Mazama exploded, leaving a crater that filled with water, to a depth of more than 1,900 feet. The park is one of Oregon's most popular tourist sites.
