Explore Arnold
Moaning Caverns
Whether you're intrigued by the eerie moaning sound, captivated by the subterranean landscapes, or seeking adventure through rappelling, the Moaning Caverns have something to offer every visitor.
First things first
An Underground World
The Moaning Caverns are part of a complex karst cave system, a term used to describe a landscape shaped by the dissolution of soluble rocks like limestone or marble. This process occurs over thousands of years as rainwater becomes slightly acidic by absorbing carbon dioxide from the atmosphere, dissolving the rock as it percolates through the ground.
Geography
Where Moaning Caverns sits
The cavern is a vertical solution cavity dissolved into marble of the Calaveras Complex, in the low oak-woodland foothills west of the pine belt.
Its main room is one of the largest single chambers in California — big enough to hold a spiral staircase and a rappel line — because groundwater exploited a near-vertical fracture instead of spreading sideways.
It is about 18 miles down Highway 4 from Chalet Bruin and Koda Loft — roughly 30 minutes.
- Region
- Sierra Nevada foothills, Gold Country
- County
- Calaveras County
- Elevation
- About 1,850 ft
- Nearest town
- Vallecito and Angels Camp
- Getting there
- Parrotts Ferry Road, off Highway 4
What to See at the Moaning Caverns
The Grand Chamber:
Upon entering the cave, visitors are greeted by the breathtaking Grand Chamber. This colossal space, large enough to accommodate the Statue of Liberty, leaves visitors in awe of nature’s artistic prowess. Stalactites hang from the ceiling while stalagmites rise from the floor, forming a surreal, otherworldly landscape.
The Bottomless Pit:
One of the most famous features of the Moaning Caverns is the Bottomless Pit. While it may not be truly bottomless, its depth of 165 feet (50 meters) creates an illusion of endlessness. Brave visitors can peer over the edge and experience the exhilarating feeling of staring into the abyss.
Crystal Palace:
Deeper into the cave lies the Crystal Palace, a hidden treasure of glittering calcite formations. This chamber showcases the delicate and intricate beauty of nature’s geological artwork.
The Moaning Sound:
As you explore the caverns, you’ll undoubtedly encounter the mysterious moaning sound. This auditory wonder is a testament to the cave’s unique acoustics, created by the vast chambers and passages.
STAY AT ARNOLD HAVEN
Our cabins are only a 20 min drive from the Moaning Caverns Adventure Park.
The Origins of the Moaning Caverns
The history of the Moaning Caverns dates back millennia, with evidence suggesting that indigenous people used the cave for various purposes, including rituals and shelter. However, the first recorded exploration of the cave took place in 1851 when Captain Joseph Taylor and Walter J. W. Taylor ventured into its depths. It was during this exploration that the eerie moaning sound, for which the cave is named, was discovered. The moaning is caused by the wind entering and exiting the cave, creating a haunting symphony that echoes through its chambers.
Over the years, the cave has been the subject of scientific study, attracting geologists and spelunkers alike. In 1927, a group of explorers led by Jack Mitchell mapped out the cave’s intricate passages, revealing its true extent. The Moaning Caverns have since become a popular destination for tourists and adventure seekers.
Nearby
Keep exploring
Cave Tours
The Moaning Caverns offer guided tours suitable for all levels of adventure. From easy walking tours to challenging rappelling expeditions, there's an option for everyone. The classic Spiral Tour takes you down a spiral staircase to the bottom of the cave.
Cave Rappelling
The cave rappelling adventure was a must-try experience. You would descend into the depths of the cave using ropes and harnesses, providing an adrenaline rush and a unique perspective of the cave's interior. Unfortunately, as of 2017, Cave Rappelling is no longer in operation and there has been no date announced for its return.
Gemstone Mining
Above ground, the Moaning Caverns also offer gemstone mining opportunities for families and young explorers. Pan for gemstones and fossils, and take home your discoveries as souvenirs.
Ziplining
Prior to 2019, guests would have the option of zip-lining 1500 feet at speeds of 40mph with the wind blowing your hair and incredible views of the Sierra Nevada Foothills. Unfortunately, as of 2019, Ziplining is no longer in operation and there has been no date announced for its return according to their website.
32 FOOT ROCK CLIMBING TOWER
The Moaning Cavern Rock Climbing Tower has several rock climbing routes to choose from, and while the climbing options range from easy to hard, all are suitable for the whole family. All participants wear climbing harnesses and are clipped on to the route of their choice so you or your kids can just climb to the top and then make use of the built in belay system to jump away from the wall for a smooth, automatic descent back to the ground.
Axe Throwing
Have a friendly competition or just test your aim when you try to hit the bullseye in our axe throwing lanes at Moaning Caverns Adventure Park!
Stay nearby
Vacation rentals near Moaning Caverns
Moaning Caverns is a straightforward drive down Highway 4 through Murphys, which makes it an easy half-day from either cabin. Looking for places to stay near Moaning Caverns? Arnold Haven has two dog-friendly cabins — a five-bedroom A-frame chalet that sleeps 12 and a two-bedroom loft that sleeps 4. Minimum stay is 2 nights, check-in is at 3pm and check-out at 11am.
- Check-in
- Self check-in, 3pm
- Cancellation
- Full refund 5+ days ahead; holidays 30 days
Check live availability, see your full price, and book securely — ID check and payment are handled by Stripe.
Good to know
Frequently asked questions
How much does it cost to go to Moaning Caverns?+
Ages 0-2: free. Ages 3-11: $17. Ages 12 and up: $23.
Why does Moaning Caverns moan?+
Moaning Cavern distant moaning sound is created by drops of water that fall into holes in a flowstone formation with a bottle-like shape.
Why is it called Moaning Caverns?+
Moaning Caverns got its name for the moaning sounds that emanate from its entrance.
How long is the tour of Moaning Caverns?+
The main tour lasts about 45 mins.
Can you still rappel at Moaning Caverns?+
As of 2017, the rappel has been closed with no expected reopening date.
How many stairs are in Moaning Caverns?+
There are 144 stairs.