On Minaret Road between Main Street & Mammoth Mountain's Main Lodge
Mammoth Lakes, CA 93546
Toll free phone: 888-466-2666
Open daily: Year-round
This sizable fissure is not an earthquake fault caused by a single quake, as the name implies. Geologists now believe it is a system of fractures formed during a series of strong quakes when the Inyo Craters and Inyo Domes erupted centuries ago.