Craters of the Moon National Monument offers an otherworldly experience that feels almost extraterrestrial. It’s no surprise that NASA trains future astronauts here for missions to the moon and Mars, making the name Craters of the Moon entirely fitting.
Visiting this remarkable place was a highlight of my travels through Idaho. I hope to make it a highlight of your journey too.
About Craters of the Moon NM
Established in 1924, Craters of the Moon National Monument and Preserve spans over 753,000 acres of volcanic terrain in Idaho. This vast area includes three major lava fields, with 400,000 acres added in 2000 to form the national preserve. The rest remains part of the national monument.
Only a small portion of the park is accessible by road. Much of it is designated wilderness, and some areas managed by the Bureau of Land Management are only reachable with high-clearance 4WD vehicles.
Humans have traversed the area for millennia, but no evidence suggests permanent settlements. Early settlers navigated through the treacherous lava beds, particularly during times of conflict with Native Americans, which made the journey extremely perilous.
The park gained fame when explorers Robert Limbert and W.L. Cole undertook various treks through the region. Limbert’s photographs and stories, published in National Geographic, played a significant role in the area’s designation as a national monument in 1924.
Places to Visit
Loop Road
The best way to explore the park is via the 7-mile Loop Road, which takes you to several key sights. Just remember, if you miss something, you’ll have to circle back.
Lava Tubes
Among the coolest features of the park are the lava tubes or “wild caves.” You can explore four publicly accessible tubes. Refer to the Wild Caves section for entry restrictions and permit details.
Splatter Cones
Splatter cones, formed by short bursts of lava, are captivating sights along the Loop Road. Some are in delicate states, so stick to designated trails to protect them.
Devil’s Orchard
Devil’s Orchard offers a fascinating view of broken lava pieces scattered across a black lava landscape. It’s a great spot to explore, wander, and capture photographs.
Inferno Cone
One of the park’s standout features, Inferno Cone is a cinder cone rising 164 feet above the landscape. The view from the top is breathtaking, offering expansive park views—though the climb on cinder ash is a workout.
Hiking in Craters of the Moon NM & P
There are numerous hiking trails throughout Craters of the Moon. If you visit in the summer, be prepared for extreme heat by bringing plenty of water, sunscreen, and sun-protective clothing. Inform others of your plans, especially for less-traveled trails.
Broken Loop Trail
At 1.8 miles, this loop trail offers scenic views of the park’s volcanic features. It’s a steady and easy-moderate hike, but the summer heat can be intense.
Hiking up Inferno Cone
This 0.4-mile trail leads to the top of the cinder cone, where you can explore a flat area and enjoy spectacular views. Despite the short distance, climbing on cinder ash demands extra effort.
North Crater Trail
This 1.8-mile trail (3.5 miles round trip) takes you through the north crater’s unique landscapes, eventually leading to the Splatter Cones. Stick to the trail to preserve protected areas.
Tree Molds Trail
This 2-mile round trip trail lets you see imprints of trees felled by lava during the last flow. It’s an intriguing glimpse into the area’s natural history.
Backcountry Hiking and Travel
Much of Craters of the Moon is untouched wilderness. Only about 100 visitors request backcountry permits annually, making it a perfect spot for solitude. Explore additional trails and lava tubes like Buffalo Cave (permit required), and consider extending your hike to the park’s other side.
Note: This area is true wilderness with no regular water sources. Be thoroughly prepared for desert travel and able to carry adequate water.
Important Regulations
– Leave no trace: Pack out all items you bring in.
– No open fires: Only backpacking stoves are permitted.
– No mechanized vehicles.
– No camping within 1 mile of Tree Molds trailhead.
– All wilderness caves are closed.
– No pets allowed.
Wild Caves of Craters of the Moon NM
Exploring the park’s “wild cave” lava tubes is a must. The Indian Tunnel is especially accessible and popular, but be sure to get a permit from the Visitor Center. Note that your clothing and gear must never have been in any other cave system to prevent spreading White Nose Syndrome to bats.
ATTENTION: Permits are free but mandatory. Be honest about your gear’s history.
Winter Visiting
Winter is a fantastic time to visit Craters of the Moon, and entry is free during the season. While the Loop Road is closed to motor vehicles, it’s open for snowshoeing, cross-country skiing, and telemark skiing. The Visitor Center rents snowshoes for about $5 per day.
Where to Stay – Craters of the Moon NM
Camping at Craters of the Moon National Monument & Preserve
The park has one campground near the entrance with 42 first-come, first-served sites (fees apply depending on the season). While no RV hookups are available, some sites can accommodate RVs. Flush toilets are available but may be seasonal.
Hotels near Craters of the Moon
Arco, Idaho, is the nearest town with lodging options, including the Arco Inn Motel and DK Motel. While I prefer camping, these are convenient alternatives.
Basic Information
Visitor Center
The Robert Limbert Visitor Center has restrooms, a gift/book store, information, and exhibits. Open daily during summer and on a reduced schedule in winter. Closed on major holidays.
Fees
– Private vehicle: $20
– Per person (bike/foot): $10
– Motorcycle: $15
– Winter access: Free
Getting There
Craters of the Moon spans nearly 1,200 square miles in eastern Idaho. The nearest town is Arco, Idaho. The park is about 1.5 hours from Idaho Falls and 2.5 hours from Boise. It’s also a convenient halfway stop between Sun Valley (Ketchum, Idaho) and Idaho Falls.
By Air
The nearest airport is Idaho Falls (IDA), but Boise (BOI) offers more flight options.