You can drive straight to the top of an extinct New Mexico volcano and walk into its crater

It’s one of Earth’s most accessible volcanoes

Capulin Volcano sits on the high plains of northeastern New Mexico, about 33 miles east of Raton. A paved road takes you straight to the rim.

A short trail drops you into the crater. From the top, you can see four states on a clear day, and at night, the skies here rank among the darkest in the lower 48.

The volcano erupted 60,000 years ago, and the cone it left behind looks like it could have formed yesterday. What you find inside it goes back even further.

Superheated lava built this cone layer by layer

About 60,000 years ago, lava shot into the sky, cooled mid-air, and fell back to earth. Each eruption added another layer to the growing cinder cone.

The volcano kept its near-perfect shape because later lava flows came from the boca, a vent at the base, not from the main crater. Those flows now cover about 15.7 square miles around the volcano.

Capulin belongs to the Raton-Clayton Volcanic Field, an 8,000-square-mile stretch with over 100 volcanoes. The field started forming about 9 million years ago, and its last eruptions happened roughly 30,000 years ago.

Scientists consider it dormant, not extinct.

The cone rises 1,000 feet above open grassland

Capulin’s summit stands at 8,182 feet above sea level, and the cone itself climbs more than 1,000 feet above the surrounding plains. The crater rim runs about a mile around, and the crater drops roughly 400 feet deep.

The whole monument covers just over one square mile, about 793 acres. You see it from miles away because nothing else out here comes close to its height.

It sits right where the shortgrass prairie meets the foothills of the Sangre de Cristo Mountains, so the land around it is flat and wide open.

A two-mile road spirals 600 feet to the top

From the visitor center, a paved two-mile road spirals up to a parking lot at the rim. You climb more than 600 feet in elevation, and the views open up with every turn.

Lava flows spread across the plain below, and distant mountains line the horizon. The road is narrow and steep, so the park meters vehicles because of limited parking at the top.

On summer weekends, you might wait up to an hour for your turn. In winter, the road can close if staff determine conditions are unsafe.

Stand on the rim and look into four states

The Crater Rim Trail loops one mile around the top of the volcano on a paved path.

The climbs and descents make it moderately difficult, but the payoff is a clear-day view into New Mexico, Texas, Oklahoma, and Colorado.

You can spot the Sangre de Cristo Mountains in the distance and pick out Sierra Grande, the largest volcano in the field, to the southeast. Signs along the trail point out volcanic landmarks across the landscape.

Take your time on this one, because the views change with every few steps.

Walk down into the crater on a paved path

The Crater Vent Trail drops you 100 feet in just 0.2 miles, straight into the bottom of the volcano. At the end, you stand among large basalt boulders that plug the ancient vent.

The trail is paved but steep, and the 8,000-foot altitude makes the climb back up harder than you expect. Leave your dog behind for this one, because pets are not allowed on the trail.

It takes maybe 20 minutes round trip, but you walk where lava once pushed through the earth.

Collapsed lava tubes line the base trails

Two unimproved trails loop around the base of the volcano. The Lava Flow Trail covers one mile across the lava flows at the bottom of the cone.

The Boca Trail runs two miles through the vent area where those flows started, and you can see collapsed lava tubes and other volcanic formations up close. That one is strenuous.

Near the visitor center, the Nature Trail follows a short, paved, figure-eight sidewalk that is wheelchair accessible. Signs along it cover the geology, plants, and wildlife of the area.

Chokecherries gave this volcano its name

Capulin is the Spanish word for chokecherry, and the shrub grows all over the park.

The volcano straddles two habitats, the grassland of the plains and the forest of the mountains, so the plant life here is a mix of both. Pinyon pine, ponderosa pine, juniper, and prairie grasses all grow on the slopes.

Mountain mahogany, scrub oak, and three-leaf sumac fill in the gaps.

Rich volcanic soil helped these plants take root and hold the steep cinder slopes in place over thousands of years.

Thousands of ladybugs swarm the summit each summer

Mule deer, wild turkey, and black bears all live in the area around Capulin. On the trails, you might spot squirrels, birds, and the occasional snake.

But the strangest sight comes between late June and early August, when thousands of convergent ladybugs gather on the trees at the top of the volcano.

The event is called hill-topping, and it covers branches in clusters of orange and black. Keep your distance from all wildlife here, and never approach or feed any animals you come across.

The night sky here is among the darkest in the lower 48

Capulin earned a Gold Tier Dark Sky Park designation from the International Dark-Sky Association in 2016. The surrounding volcanic hills and mesas block light from distant towns, so the sky gets properly dark.

The park runs dark sky viewing programs most Saturday nights in summer and on select nights in fall, winter, and spring. Giant telescopes let you see planets, galaxies, and nebulae with your own eyes.

If you bring your own telescope, the Dark Sky Viewing Area in the visitor center parking lot stays open all night, every night.

A short film tells the story of the eruption

The visitor center at the base of the volcano covers geology, natural history, and human history through its exhibits.

Inside the auditorium, a short film walks you through Capulin’s eruption and the surrounding volcanic field. A park bookstore sells books and educational materials.

The monument stays open year-round, but hours change by season.

Elevation at the visitor center starts around 7,247 feet and climbs to 8,182 feet on the rim, so dress in layers and prepare for wind no matter when you visit.

A cowboy’s discovery here rewrote American history

President Woodrow Wilson established the monument on Aug. 9, 1916, originally as Capulin Mountain National Monument. It became Capulin Volcano National Monument in 1987.

Near the park, cowboy and amateur naturalist George McJunkin discovered ancient bison bones in 1908 that led to the identification of the Folsom archaeological site.

That finding proved humans lived in North America thousands of years earlier than scientists had believed.

The Cimarron Cutoff of the Santa Fe Trail also passed through this region, and some of these volcanic landmarks served as trail markers for 19th-century travelers.

Explore Capulin Volcano National Monument in New Mexico

You can find Capulin Volcano National Monument at 46 Volcano Highway, Capulin, N.M., about 33 miles east of Raton off US Highway 64/87. The monument is three miles north of the village of Capulin on N.M. Highway 325.

No public transportation serves the park. Entrance costs $10 per vehicle, and an annual pass for the monument is also available.

Pets must stay on a leash and can only go on the Nature Trail, parking areas, picnic areas, and areas near the visitor center.

This article was created with AI assistance and human editing.

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