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Craters of the Moon with Kids: Idaho's Volcano Park
Updated: Nov 1
Craters of the Moon National Monument is one of the strangest and coolest places we visited while in the American West, and the one our kids love to talk about. It is 750,000 acres of black lava in southern Idaho, created by eruptions along a 52 mile crack in the earth called the Great Rift, the most recent only about 2,000 years ago. You can walk into a lava tube cave, climb a cinder cone in 10 minutes, and sleep in a campground that looks like a lunar landing site.
This post is part of our American West series, alongside Washington's National Parks, the Columbia River Gorge, and Yellowstone and Grand Teton.
Why Craters of the Moon Is Worth the Detour
This National Monument is a bit off the beaten path, but it is well worth making the effort to visit.
It is the clearest volcano classroom in the country. At Craters of the Moon the landforms are not buried under forest. Cinder cones, spatter cones, lava tubes, and three different textures of lava flow sit on the surface where a nine-year-old can walk up and touch them.
Apollo astronauts trained here. In 1969, NASA sent four astronauts to Craters of the Moon to learn volcanic geology before going to the actual moon. Telling kids that before you arrive changes how they look at the ground.
It is small and walkable. The seven mile loop road connects every major trailhead. Our four hikes totaled a little over three miles.
It is an International Dark Sky Park. On a clear night, the Milky Way is obvious with no equipment at all.
Getting There: Boise, ID and the Drive In
We drove from Walla Walla, WA to Boise, ID and then on to Craters the next day.
In Boise we spent an afternoon at the World Center for Birds of Prey, which is run by The Peregrine Fund and is one of the better wildlife education stops we found all year. The kids met a California condor up close and learned how the species went from 22 individuals in the wild to a recovering population.
We also walked Julia Davis Park along the Boise River, and Matt had a chance to catch up with a former GE Vernova colleague for the afternoon.
From Boise it is about three hours to Craters of the Moon on US-20.
Camping at Craters of the Moon
We stayed one night at the Lava Flow Campground, first-come first-served, in site 30, which has the best view in the loop. The campground sits directly on a lava flow, with tent poles tucked between black rock and sagebrush.
We set up the tent with no rainfly so the kids could fall asleep looking straight up at the stars, which was magical right up until Matt and Kelly had to spring to action at 1:00 AM to put the rainfly on ahead of incoming rain. We packed up wet the next morning. Worth it.
Our Four Hikes at Craters of the Moon
All four are short, and together they cover every major feature of the park.
Trail | Distance | What you see |
0.3 mi | Pahoehoe and aa lava side by side, plus crater wall fragments | |
0.5 mi | Accessible loop through cinder islands and twisted limber pines | |
1.1 mi | Steep climb up a cinder cone to a 360 degree view of the Great Rift | |
1.2 mi | Lava tube caves you can climb down into |
Inferno Cone was the winner
It looks impossible from the parking lot: a bare black hill with no switchbacks, just a straight walk up loose cinders. It only takes about 10 minutes up steep uphill walking. At the top you can see the whole chain of cinder cones lined up along the Great Rift, which makes the geology click instantly. The earth cracked, and it erupted along the crack, over and over.
Our kids ran down at a full sprint. Maximum fun.
The caves need a permit and a flashlight
The Caves Trail leads to several lava tubes, including Indian Tunnel, which is big enough to walk through with sections of collapsed ceiling letting light in. You need a free cave permit from the visitor center, which exists to protect bats from white-nose syndrome, and you need to confirm that nothing you are wearing has been in another cave.
Bring a real flashlight or headlamp per person, not a phone, and shoes with grip. The floors are uneven broken rock.
Hells Half Acre on the way out
The next morning we packed up in the rain and stopped at Hells Half Acre, a separate lava field managed by the BLM just off I-15, and walked the 1.0 mile Volcanic Badlands Loop. It is free, it is almost always empty, and it makes a good leg stretch if you are heading toward Idaho Falls or West Yellowstone.
The Junior Ranger Program Here Is Excellent
Eva and Jordan both completed the Craters of the Moon Junior Ranger program, and it was one of the strongest books of the whole trip. The activities force kids to compare lava types by touch, identify plants surviving in cinder, and reason about why the monument looks the way it does rather than just recording facts.
This is the stop where our kids finally stopped asking "is this a volcano?" and started asking "what kind of eruption made this?" That is a real shift, and it took about 24 hours.
What Eva and Jordan Learned
Volcanoes build, not just destroy. Everything you walk on here is new land, geologically speaking.
Life is stubborn. Limber pines, wildflowers, and ground squirrels all make a living on bare rock with almost no soil.
Scientists practice. The Apollo connection taught them that even astronauts have to go somewhere and learn the basics first.
Practical Tips for Craters of the Moon with Kids
1. Give it two nights if you can
One night works. Two lets you do the caves without rushing, catch a ranger program, and have a real dark sky evening.
2. Get the cave permit when you arrive
It is free and takes five minutes at the visitor center, but you can't enter the caves without it.
3. Headlamps, closed shoes, long pants
Lava rock is sharp. Our kids both got a bit scraped on the hikes and in the caves, and long pants would have prevented at least one of them.
4. Start with Inferno Cone
Do the climb first while everybody is fresh, then work the short loops. It sets the mental map for the rest of the park.
Our Biggest Takeaway
Craters of the Moon is the kind of place that surprises. There is no famous geyser, no iconic peak, no crowd. There is a black landscape that looks like nothing else our kids had ever seen, which demonstrated how geology can shape and reshape the earth over thousands of years. Definitely worth visiting!
Author bio: Matt Nobles is a dad, husband, and relentless learner. After nearly 20 years in corporate finance and sustainability, and after having already travelled to 77 countries over the years, he's now spending the 2026–2027 academic year worldschooling with his wife Kelly and their two kids, Eva (11) and Jordan (9). Follow the journey at theglobalnobles.com.
