You can walk inside a volcano near Bend, and swim in the lakes inside it

A volcano you can actually walk into

Twenty minutes south of Bend, a volcano the size of Rhode Island sits waiting.

Newberry National Volcanic Monument spreads across 54,000 acres of Central Oregon, and it isn’t a roped-off lookout or a museum exhibit.

You can drive into the crater, swim in the lakes inside it, walk across a field of volcanic glass, and explore a cave that stays 42 degrees all year.

Most people driving through Bend have no idea any of this exists.

The ground sank and left a 17-square-mile bowl

What looks like a crater is actually a caldera, and there’s a difference. A crater forms when something explodes outward.

A caldera forms when the ground collapses inward after a magma chamber empties. That’s what happened here, and the result is a bowl stretching 17 square miles across the heart of the volcano.

More than 400 cinder cones and vents dot the wider landscape.

Native peoples figured out this place was worth visiting about 10,000 years ago, and the volcano has erupted roughly 25 times since then.

Two lakes sitting inside an active volcano

The caldera holds two lakes, Paulina Lake and East Lake, sitting side by side where one larger lake used to be. Volcanic activity split them apart.

Now you can swim in them, fish from a kayak, or pull a boat across water that sits inside a volcano, still warm underneath. Campgrounds line both shores, so you can wake up inside the caldera if you want.

A loop trail wraps the full shoreline of Paulina Lake for those who’d rather take it slow on foot.

Walk across a field of shiny black volcanic glass

The Big Obsidian Flow is the youngest lava flow in Oregon, about 1,300 years old, and it looks like the earth cracked open and spilled black glass. That’s essentially what happened.

A mile-long loop trail takes you right up onto the flow, where the shiny obsidian mixes with chunks of jagged gray pumice. Signs along the trail explain how it all came together.

Few trails anywhere put you that close to something this geologically young.

Paulina Falls splits in two on the way down

On the western edge of the caldera, Paulina Creek drops about 80 feet in a double waterfall, two side-by-side streams falling together over the same ledge.

The water starts at Paulina Lake and works its way down through the creek before it goes over the edge. A short paved path leads right to a viewpoint where you can see both streams at once.

It’s one of those places where the photo doesn’t quite capture the sound, and the sound is most of it.

Oregon’s longest lava tube is pitch black and 42 degrees

The Lava River Cave stretches more than a mile underground, making it the longest lava tube in the state and one of the first ever discovered in Oregon.

It formed when molten lava drained out and left the hardened shell behind. Inside, the temperature holds at 42 degrees year-round, which means your June T-shirt won’t cut it.

Bring a warm layer and two light sources because there’s no ambient light in there at all. A reservation through the official website is required to enter.

Lava swallowed a pine forest 7,000 years ago

Walk the Lava Cast Forest trail and you’ll see what happens when lava moves through a grove of ponderosa pines. About 7,000 years ago, a flow swallowed the trees whole.

The lava hardened around each trunk, the wood rotted away over the centuries, and what’s left are hollow rings and molds in the exact shape of the original trees.

The paved loop runs 0.9 miles, which is short, though a few sections get narrow and steep. The whole thing looks like a forest that forgot to stay alive.

Lava Butte puts a fire lookout at the top of a cinder cone

Lava Butte climbs about 500 feet above the surrounding lava plain, a cinder cone with a fire lookout sitting at the top.

A road and a seasonal shuttle both reach the summit, and a short rim trail circles the crater once you’re up there. The view sweeps across the Cascade peaks and out over the High Desert.

Paved trails start near the base if you want to walk through the lava flows below the cone before heading up.

Paulina Peak puts three landscapes under your feet at once

At 7,985 feet, Paulina Peak is the high point of the monument, rising straight from the south rim of the caldera.

From the top, you’re looking at the Cascades to one side, the caldera and its two lakes below you, and the desert stretching out beyond. You can drive up or take the Paulina Peak Trail on foot.

Either way, the summit is a popular lunch spot, and it earns it. The caldera doesn’t look real from up there.

It looks like a map of itself.

Apollo astronauts used this lava field as a moon stand-in

From 1964 to 1966, NASA brought Apollo astronauts to Newberry to train on the lava landscape. The rock surface looked enough like the lunar surface that crews used it to practice spotting and collecting samples.

That preparation went directly into how the missions ran once they reached the Moon. It’s one of those facts that reframes the whole place.

You’re not just walking across old lava. You’re walking across terrain that helped humans figure out how to walk on another world.

Magma sits just a few miles below the water’s surface

Geologists put the magma chamber somewhere between two and five kilometers below the caldera floor. That’s close.

Warm patches in East Lake mark where the heat pushes up from below, and primitive hot springs bubble up along the lake shores in spots. The volcano isn’t dormant.

Scientists monitor its seismic and geothermal activity on an ongoing basis.

Standing at the edge of East Lake, you’re standing on a thin layer of earth over something that hasn’t finished working yet.

Few places pack this much geology into one afternoon

Newberry moves through landscapes fast. One mile you’re walking a paved path past tree molds from 7,000 years ago, and the next you’re standing at the edge of a lake inside a volcano that last erupted 1,300 years back.

Trails run the range from flat paved loops to steep ridgeline climbs.

The monument stays quieter than many of the bigger draws in Oregon, which means the parking lots are manageable and the trails don’t feel crowded.

Wildlife moves through too, including birds, ground squirrels, and bats deep in the cave.

Visit Newberry National Volcanic Monument in Oregon

To reach the monument, head about 11 miles south of Bend on Highway 97. The Lava Lands Visitor Center is the main starting point.

Most sites are accessible from around May through October, though the caldera roads and visitor centers close in winter. A day pass runs $5, or you can use an annual Northwest Forest Pass or America the Beautiful Pass.

The Lava River Cave requires a timed reservation through the official website and can close in some years to protect bats, so check before you plan around it.

This article was created with AI assistance and human editing.

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