Earthquake Fault Mammoth Lakes: What to See & How to Visit

April 10, 2026

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.

What to See at the Earthquake Fault

Highlights of the Earthquake Fault include:

  • The volcanic fissure and rock walls
  • Interpretive trail and signage
  • Forest scenery and viewpoints
  • Nearby hiking trails

The Earthquake Fault

Located only minutes from downtown, this rare natural phenomenon can easily be explored by sightseers and visitors of all ages.

The fracture is believed to have formed around 600 years ago during one of the recent Inyo/Mono Craters eruptions and likely has little to do with a single earthquake event. While called a fault, this massive linear fissure in the Earth’s surface is more accurately defined as a fracture, as no movement between the sides is recorded.

It’s little wonder that this dramatic landform exists on the outskirts of town, as the entire region is a geologically active wonderland of fumaroles, hot springs, and earthquakes. From the massive Long Valley Caldera to the bubbling geothermal springs of Hot Creek Gorge, a wide variety of the Earth’s powerful forces are on display in Mammoth Lakes.

The Earthquake Fault interpretive area is located on public lands administered by the Inyo National Forest. At the parking area, visitors will find restrooms, picnic tables, and the beginning of the self-guided interpretive trail.

The short, family-friendly 0.2-mile hiking trail descends deep into the rocky fissure and winds through majestic stands of old-growth red fir, Jeffrey pine, and lodgepole pine. Along the way, several interpretive signs provide information about the natural history, ecology, and preservation of the area.

The easily accessible interpretive area has recently undergone a rehabilitation by the U.S. Forest Service, and there is no charge for visitors.

How to Visit the Earthquake Fault

The Earthquake Fault interpretive area is open year-round, though access may vary depending on snow conditions in winter. The short hiking trail is suitable for most visitors and offers an easy way to explore this unique geologic feature.

In winter, the parking area is not maintained, and access may require snowshoes or cross-country skis

Getting to the Earthquake Fault

Getting to the Earthquake Fault is easy and only requires a short drive from downtown Mammoth Lakes. To reach this scenic fissure, travel west on State Route 203 heading toward Mammoth Mountain’s main lodge.

Drive 1.5 miles beyond the Village at Mammoth to the well-marked turnoff to the paved parking area on the right-hand side.

More to Explore Nearby

In addition to the interpretive hike, the Earthquake Fault is a fantastic outdoor setting for visitors of all ages. Whether picnicking in the shade of towering pines or setting off on a longer trek to Minaret Vista on the 4-mile Mountain View Trail, the surrounding forest offers a range of outdoor experiences.

For additional information, stop by the Mammoth Lakes Welcome Center for the most current conditions at the interpretive area. Visitors may also call the Inyo National Forest at (760) 873-2400.

Visit Mammoth
Author
Visit Mammoth
Unreal. There is no better way to describe Mammoth Lakes, California. A place so majestic that breathtaking views surround you in every direction. The staff at Mammoth Lakes Tourism is committed to stewardship, education, providing the ultimate visitor experience, and keeping the Real Unreal.
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