You can climb into the rim of a real volcano on California’s emptiest stretch of road: Here’s what to know

Wikimedia Commons/blmcalifornia

It’s been quiet for thousands of years

A dark cone of volcanic rock sits in the middle of California’s eastern Mojave Desert, just off historic Route 66. Amboy Crater rises about 250 feet above the land around it and stretches roughly 1,500 feet across. The Bureau of Land Management calls it one of the youngest volcanic fields in the country. You can hike across a field of black lava, climb to the rim, and look straight down into the bowl. The road to get there takes you through some of the emptiest desert in San Bernardino County. Shutterstock

Four cones stacked inside each other over 79,000 years

Scientists date Amboy Crater to about 79,000 years ago, back in the Pleistocene. The volcano built itself up in layers as lava and cinders erupted from the same center over and over again. What you see now is actually a set of at least four nested cones, one inside another. The Smithsonian’s Global Volcanism Program has no record of any eruption here in the last 10,000 years. Travelers on Route 66 from the 1920s through the 1960s used to pull over and climb it. Wikimedia Commons/blmcalifornia

Black basalt stretches for miles in every direction

Before you reach the crater, you cross its lava field. Dark basalt rock covers roughly 24 to 27 square miles around the cone. The trail from the parking area cuts straight across this ground to reach the base. Light, sandy soil fills the low spots between the rocks, and windblown sand has settled into dips across the lava over thousands of years. The contrast hits you right away. Black rock, pale sand, and nothing else but sky. Shutterstock

Walk right into the bowl through a gap in the wall

A breach on the west side of the crater lets you walk right into the bowl. That opening formed long ago when lava poured out over the land and left a gap behind. Inside, a solidified lava lake covers the crater floor. Small circles in the ground mark spots where later volcanic activity pushed through. The walls rise around you once you step in, and the wind drops. You stand in the middle of a volcano and the silence closes in. Shutterstock

From the rim, you can see salt flats and distant ranges

A footpath leads up the side of the cone to the top of the rim. From there, you look straight down into the crater bowl.

Bristol Dry Lake spreads out to the east, a wide white salt flat that glows in the sun. Mountain ranges frame the horizon in nearly every direction. The whole lava field fans out below you in shades of black and brown. You can trace where the rock flowed and where the desert took over again. Wikimedia Commons/blmcalifornia

Lava bombs cooled in midair and hit the ground like eggs

The rocks here tell the story. Lava bombs, egg-shaped chunks flung from the volcano, cooled in the air before they landed. Some rocks are rough and full of holes, exactly what you expect from a volcano. Others are smooth, shaped by the amount of steam in the flowing lava. The ground shows ropy, wrinkled patterns where lava once oozed and hardened in place. Pressure ridges and mounds ripple across parts of the field like frozen waves. Shutterstock

One of the Mojave’s most symmetrical cinder cones

Amboy Crater earned its National Natural Landmark status in 1973 for both its visual and geological importance. The near-perfect symmetry of the cone is what draws photographers and geology fans from across the country. The Bureau of Land Management manages the site and considers it one of the best examples of a symmetrical cinder cone in the Mojave. That clean, round shape is hard to find anywhere else in the desert. Shutterstock

The eruption split one dry lake into two

When the volcano erupted, lava poured across the valley floor and divided what was once a single dry lake into two separate playas. These flat, chalky lake beds shine bright white in the desert sun. Bristol Dry Lake sits just to the east of the crater, and you can see it clearly from the rim. The pale lakes against the black volcanic rock make one of the sharpest color contrasts you will find anywhere in the Mojave. Wikimedia Commons/blmcalifornia

Bright wildflowers push up through the black rock

In the cooler months, wildflowers bloom between the dark lava rocks. Late winter into early spring is often the best stretch for color. Bright petals against black stone make a combination that stops you in your tracks. Green desert plants also push up through cracks in the rock, finding whatever moisture they can. The whole landscape shifts during bloom season, and what looks barren the rest of the year suddenly comes alive with scattered reds, yellows and purples. Wikimedia Commons/blmcalifornia

Shade, picnic tables, and a view without the climb

A shaded overlook near the parking area gives you a clear view of the crater without hiking a step.

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The post You can climb into the rim of a real volcano on California’s emptiest stretch of road appeared first on When In Your State.

Picnic tables sit under cover, so you can rest in the shade and take it all in. Rest stations line the trail for hikers heading toward the rim. The site sits in wide open desert with nothing around it for miles. The stillness is the first thing you notice, and it stays with you the whole time you are there. Wikimedia Commons/blmcalifornia

Early light turns the cone into a photographer’s subject

The crater’s clean, round shape makes it a striking subject in photos. Early morning and late afternoon light bring out the texture of the rock and deepen the shadows along the rim. The black cone against pale desert and blue sky is a classic Mojave shot. From the rim, sweeping views in every direction give you wide landscape compositions without even trying. During wildflower season, bursts of color fill the foreground and add another layer to the frame. Wikimedia Commons/blmcalifornia

Dark skies and open desert after the sun goes down

The remote setting means dark skies after sunset. Stars come out bright and thick, with no city glow to wash them out. Birds and small desert creatures move among the rocks and plants during the day, and the open terrain makes them easy to spot. Wide, unbroken horizons stretch in every direction. The quiet desert air and the distance from everything else make Amboy Crater feel like a place the rest of the world forgot about. Wikimedia Commons/Blervis

Explore Amboy Crater National Natural Landmark in California

You can find Amboy Crater off National Trails Highway, the old Route 66, near the town of Amboy in San Bernardino County, about halfway between Barstow and Needles. The Bureau of Land Management manages the site out of the Needles Field Office at 1303 South U.S. Highway 95 in Needles. Two paved parking lots, a vault toilet, a shaded picnic area, and an accessible overlook are on site, but there is no running water. The round-trip hike takes about two to three hours, so bring plenty of water. Plan your visit between October and April, because summer temperatures can hit 110 to 120 degrees with heat radiating off the rock. This article was created with AI assistance and human editing. Read more from this brand:

Roy’s neon sign never went out and neither did this ghost town on Route 66

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This Mojave desert ranch is made of 200 glass trees, and it hums when the wind blows

The post You can climb into the rim of a real volcano on California’s emptiest stretch of road appeared first on When In Your State.