The split-apart rock of the Mammoth Lakes Earthquake Fault testifies to the Earth’s mighty forces, and serves as a record of a dramatic period of geologic unrest.
Positioned deep in the forest on rolling foothills flanking the base of Mammoth Mountain, this incredible fissure cuts through hard volcanic rock for several hundred feet and reaches a depth of up to 60 feet.
The fracture is believed to have formed around 600 years ago during one of the recent Inyo/Mono Craters eruptions.
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