A permit-only cave. Over 4,000 feet of explored passages.
Crystal formations that have been growing in the dark for centuries.
Wyoming is hiding something extraordinary and very few people know it exists. Less than a thousand visitors make it here each year.
That number is not a warning.
That is the whole appeal. A real underground adventure without the crowds, the gift shops, or the guided tour groups shuffling past every thirty seconds.
Just three dramatic levels of twisting passages, sparkling crystals, and the kind of cool, quiet darkness that makes everything above ground feel temporarily irrelevant.
The history runs deep too. Buffalo Bill himself is part of this cave’s story, which makes every step through it feel even more significant.
Wyoming rewards the adventurous traveler who goes looking beyond the obvious. This cave is that reward at its most raw and most spectacular.
Get the permit. Take the road less driven.
Go find what most people never will.
A Cave Buffalo Bill Loved
Not many caves can say a legend personally lobbied the president for them. Spirit Mountain Cave has that story, and it is a good one.
Back in 1908, a local hunting guide named Ned Frost discovered the cave tucked into Cedar Mountain, about five miles west of Cody, Wyoming. He called it Frost Cave at first, a sensible choice for a man who found it himself.
Then William “Buffalo Bill” Cody got involved. He was so impressed by the cave’s sparkling crystals and beautiful stalactites that he personally asked President William Howard Taft to give it national monument status.
In 1909, Taft agreed. The cave became Shoshone Caverns National Monument, one of only eleven national monuments that would later be delisted.
That delisting happened in 1954, which makes Spirit Mountain Cave a truly one-of-a-kind piece of American history.
The cave briefly reopened as a commercial attraction called Spirit Mountain Caverns in 1957, but closed again by 1966. Today, the Bureau of Land Management manages it quietly, and Wyoming holds onto this story like a proud family heirloom.
How many caves can claim both a famous frontiersman and a presidential signature in their biography? This one wears that history well.
Getting Your Cave Key
Visiting Spirit Mountain Cave is not like showing up to a national park and buying a ticket. There is a whole process, and honestly, that process is part of the fun.
First, you need to visit the BLM office in Cody, Wyoming, during weekday hours, which run from 7:45 AM to 4:30 PM Monday through Friday. The office is closed on weekends, so plan your trip around that detail carefully.
You will pay a refundable $20 deposit to borrow the key. In return, the BLM staff will hand you a map of the known cave passages, along with hard hats and headlamps if your group needs them.
Visitors say the BLM team is genuinely helpful and happy to answer questions before you head out.
Only a small number of people visit each year, so the staff tends to give each group real attention rather than rushing anyone through. That personal touch makes the whole experience feel different from a standard tourist attraction.
Could there be a cooler souvenir story than telling your friends you had to borrow a key to enter a cave? That detail alone makes this Wyoming adventure worth planning.
The Road Up Cedar Mountain
The road to Spirit Mountain Cave is not shy about testing your vehicle. Visitors describe it as steep, loose with rock, and barely wider than a single car.
That description is not an exaggeration.
A high-clearance vehicle with four-wheel drive is strongly recommended. Standard two-wheel-drive cars and low-clearance vehicles will struggle, and there is no room to pass oncoming traffic on the narrow sections.
If another vehicle is coming toward you, one of you is backing up.
The good news is that the drive rewards every nerve-wracking moment. The views of the Cody area open up beautifully as you climb, and the rugged landscape of Wyoming stretches out in every direction around you.
There are no restroom facilities at the trailhead, so plan that part of your day before leaving Cody. Parking is a grassy area off the side of the trail, informal but functional for small groups.
Bear spray is also worth having on hand. Grizzlies have been known to move through this area from Yellowstone, and mountain lions already have an established presence on Cedar Mountain.
The road itself becomes part of the adventure, setting the tone for everything that follows. If getting there was easy, it would not feel half as satisfying when you finally reach that cave entrance.
The Trail To The Entrance
Once you park, the hike to the cave entrance is short. Most visitors describe it as 0.3 to 0.4 miles, which sounds easy enough until you factor in the terrain.
The trail heads downhill from the parking area, and the final stretch before the cave entrance gets noticeably steep. There is loose rock on the descent, and one visitor pointed out that you are essentially walking along a cliff edge near the bottom.
Solid footwear is not optional here.
The path itself is easy to follow and does not require any navigation skills. Even families with young children have completed this hike without major difficulty, though the steep section near the entrance demands careful footing from everyone.
Views from the trail are worth pausing for. Cedar Mountain offers wide, open sightlines across the Wyoming landscape, and the elevation gives the whole approach a dramatic, cinematic quality that photos barely capture.
Coming back up after your cave visit is where legs really get tested. The uphill return on loose rock is more demanding than it looks on the way down, so pace yourself and take the climb at a comfortable speed.
Have you ever noticed how the best things always seem to require just a little more effort to reach? This trail is a perfect example of that universal truth.
Opening That Famous Gate
The gate at Spirit Mountain Cave has developed a small reputation among visitors, and it earns every bit of that reputation. Opening it is a puzzle all on its own.
The padlock sits behind the gate rather than in front of it. To open it, you have to reach your hand through the iron grate, feel around for the lock, and insert the key without dropping it into the darkness below.
Visitors with larger hands or bigger builds may find this genuinely challenging.
Once the lock is off, a heavy metal door swings downward. The opening is roughly 24 inches square, so you will be climbing through on hands and knees to get inside.
That entrance alone tells you exactly what kind of adventure is waiting.
The gate was installed by the Bureau of Land Management after they took ownership of the cave in 1977 and 1978. It protects the interior from damage and keeps access limited to those who have gone through the proper permit process.
Visitors say that the moment they squeeze through that small opening and feel the cool cave air hit their face, the awkward entry is completely forgotten. The cave takes over from there.
It is one of those experiences where the story practically writes itself, and your friends will never believe you until they try it themselves.
Inside The Cave Itself
The inside of Spirit Mountain Cave rewards every bit of effort it took to get there. The chambers open up in ways that genuinely surprise first-time visitors.
The cave develops across three levels, with over 4,000 feet of surveyed passage. Handlines are highly recommended for moving between levels because the vertical drops are real and the climbs are steep.
This is a wild cave, meaning there are no paved paths, handrails, or lighting systems installed for visitors.
Sparkling crystals catch headlamp beams throughout the passages. The cave was formed by water rich in hydrogen sulfide that slowly dissolved the soft limestone of Cedar Mountain over thousands of years, creating an underground world with impressive speleothems still intact in many areas.
The temperature inside holds steady at 50 to 55 degrees Fahrenheit no matter the season. Wyoming summers can push 90 degrees above ground, so that cool underground air feels like a reward after the hike in.
Some areas are accessible to young children and people who prefer not to crawl. Getting to the deeper explored sections requires belly crawls, knee crawls, and squeezing through low passages that test flexibility and nerve in equal measure.
A small population of bats lives in the cave, though visitors report they are calm and not swarming. Sharing space with them is just part of the experience.
What To Pack For This
Packing right for Spirit Mountain Cave is the difference between a great adventure and a frustrating one. A few key items make all the difference underground.
Headlamps are essential. The BLM office can provide them along with hard hats as part of your $20 deposit package, but having your own reliable headlamp with fresh batteries gives you peace of mind.
Backup lighting is always a smart call in any wild cave.
Sturdy, closed-toe shoes with good grip are non-negotiable. The rocky passages, wet surfaces, and steep climbs demand footwear that stays on your feet and keeps you stable.
Flat-soled sneakers are not the right choice here.
Knee pads are worth considering if you plan to explore the deeper sections. Crawling on limestone is hard on joints, and nobody wants sore knees on the hike back up the mountain.
Old clothes that can get dirty are equally practical.
A printed copy of the cave map the BLM provides helps enormously once you are inside. Cell service does not exist underground, and the passages branch in ways that can feel disorienting without a reference point.
Bear spray should ride along in your pack for the approach trail, given the wildlife activity in the area. The cave itself is the destination, but the mountain around it is very much alive with Wyoming wildlife year-round.
Best Time To Visit
Spirit Mountain Cave is open year-round in terms of access, but timing your visit smartly makes the whole trip more enjoyable. A few seasonal factors are worth knowing before you book your trip.
Spring and early fall tend to offer the most comfortable driving and hiking conditions on Cedar Mountain. Summer heat above ground makes that cool 50-degree cave air even more welcome, but the road can be dusty and the sun intense.
Winter access is technically possible but the steep, loose road becomes genuinely risky with ice or snow, as visitors have noted the descent to the cave entrance is already challenging in snowy conditions.
The BLM office in Cody is only open Monday through Friday, from 7:45 AM to 4:30 PM. Planning your visit around a weekday is absolutely necessary, since no key means no entry.
Arriving early in the day gives you the most time to explore without rushing.
Weekday visits in shoulder seasons also mean fewer vehicles on that narrow mountain road. The last thing you want is to meet another car on a steep section with no room to pass.
Wyoming’s weather can shift quickly at elevation, so checking the forecast before heading out is always a good idea. A clear morning can turn cloudy and cool by afternoon, especially on exposed mountain terrain like Cedar Mountain.