When was crater lake made?



  1. 0 Votes

    Crater Lake was formed approximately 7700 years ago, after the collapse of an ancient volcano which is now known as Mount Mazama. The basin was formed after the top 5000 feet of the volcano collapsed. Lava flows sealed the bottom, and the basin was filled with approximately 4.6 trillion gallons of water from rainfall and snow melt. This created the seventh deepest lake in the world at 1,932 feet

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