Black Chasm Cavern: Amador County Hidden Gem

If you drive through Pine Grove on Highway 88/104 in Northern California, you will most likely notice the signs for Black Chasm Cavern at Pine Grove-Volcano Road. It’s hard to miss them. I have seen these signs hundreds of times and have been meaning to go to Black Chasm Cavern ever since I moved here. Last year, I talked about how I see fun things then forget about them. Well, I finally put this on my calendar and went!

View a wide variety of formations at Black Chasm Cavern including stalactites, stalagmites, flowstone and the vast array of rare helictite crystals.Arriving at Black Chasm Cavern

The drive to the Cavern and visitor center is over a well-maintained gravel road off of Volcano-Pioneer Road. There are a couple of roads that turn off as you drive up — just follow the signs. Before you reach the center, there is a parking lot for RVs and buses. Automobile parking is farther up the road by the center. Outside the entrance to the visitor center and gift shop you’ll find picnic tables and clean restrooms.

Black Chasm Cavern visitor center exterior

The Visitor Center and Gift Shop

I was pleasantly surprised when I walked into the visitor center and gift shop where a little “wow” slipped out. It is quite large (3,000 square feet) and so not crowded like a lot of gift shops. The vaulted ceiling and large windows let in ample natural light to showcase the gems and other items available for sale. When I walked in, I received a warm and enthusiastic welcome from the staff.

Visitor center interior
Visitor center interior
Chrysocolla on display
Chrysocolla description

In the gift shop, you can crack your own geodes or buy packages of dirt to take outside to the water flumes. Kids will love watching the gems appear as the dirt washes away.

Sluice instructions

Crack your own geode
Water flume outside Black Chasm Cavern

Buying Your Tickets for the Black Chasm Cavern Walking Tour

Black Chasm Cavern is open year round. Cave walking tours are offered every hour on the hour beginning at 10 am and ending at closing time (see below). You purchase your tickets at the counter when you arrive for the next available tour, which is limited to 25 people.

Sample $1 off couponI thought, even on a Saturday, I might be the only one, or at least one of just a few, on my tour. When I asked about it, Michael told me that most of their tours sell out! I arrived around 11:10 and paid for the 12 o’clock tour. By 12, there were 18 people in my group. I had planned to come the day before on Friday and Michael told me there were over 200 school kids there that day. So glad my plans forced me to change to Saturday!

I have read many reviews of Black Chasm Cavern on Yelp and Trip Advisor. The only real negative anyone mentioned is that some people felt the tour is over-priced for what you get. Some said the price is high but worth it. The walking tour lasts for less than an hour and is $17.50 for adults. I tend to agree that this is a little pricey; however, if you qualify, there are lots of discounts available if you know to ask for them.


  • I have a hard time thinking of myself as a senior so I rarely remember to ask about senior discounts. The senior (55+) and military rate is $14.88.
  • Groups of 15 or more also pay $14.88.
  • If you live in Amador, Calaveras or Tuolumne County you can join the Locals Adventure Club which offers the best rate at $14.00.
  • If you don’t qualify for any of these discounts, save your ticket for $1 off for a return visit or a visit to either of the other caverns operated by Cave and Mine Adventures.
  • Print a $1 off coupon from the website. This coupon has restrictions so be sure to read them carefully.
  • Come on your birthday and it is FREE!

Helpful Tips

  • You need to leave all purses, backpacks, etc. in your car. Walkways are steep and narrow. These things can get in the way, get caught or even bump into and damage the walls. If you drop something into the cavern, it won’t be retrieved!
  • Photography, even flash photography, is allowed and encouraged, but no tripods or selfie sticks are permitted.
  • There are 165 stairs down into the cavern and the same coming back up. Keep this in mind if mobility is an issue for you or anyone in your party. A couple of months ago, I might have been huffing and puffing coming back up those stairs, but thanks to my trainer, they didn’t even phase me.
  • Some of the stairs are wet and slippery as well as steep. Be sure to hold the handrail.
  • It is cool in the cavern, 59 degrees, so a sweater or sweatshirt is recommended, no matter how warm it is outside.
  • If you are extremely claustrophobic, you might want to skip the tour.
Stairs down to the second level platform

Stairs down to the second level platform

Before the Tour

After spending time (and money) in the gift shop, I went out to the back deck to wait for my tour time. I’m not sure what brought it to mind but I started thinking about claustrophobia. As I’ve gotten older, that hasn’t seemed to be an issue for me. It was never really bad – not like I couldn’t go in elevators or anything – but I didn’t like really tight spaces. I’ve even had more than a few nightmares about getting stuck in places. I was hoping that the cavern would be open enough that I wouldn’t even have to think about it.

Before you head out on your tour, the guides go over a few rules and some other information. And what do you think they brought up? Claustrophobia! They said to be sure to keep your ticket stub in case you need to leave. OK, now I’m thinking a little more about it.

The Black Chasm Cavern Walking Tour

We headed down the stairs to the cave entrance. It is narrow and low. You have to duck if you are even just a couple of inches taller than me. (I rarely have to duck!) I took a deep breath and started down the stairs into the cavern. So that was it. That was the only spot that gave me even a little concern, and that was mostly anticipation.

Cave entrance
Looking down the stairs into the cavern from outside

The tour takes you through three of the 18 known chambers in the cavern. Most of the other chambers are too small or too delicate for tourists. Our guides, James and Michael, were very knowledgeable, both about the history and the geology of the cavern. They were fun and entertaining. As you may know, I love learning about the history of Gold Country so their stories were fascinating. One of my favorites was about how the cavern was discovered and why some of the formations are broken off.

The formations in the cavern were spectacular and, of course, photographs do not begin to do them justice, but I’m going to show you some anyway. Formations in the cavern include stalactites, stalagmites, columns (where stalactites and stalagmites come together), flowstone, draperies, ribbons and more.

Formation in cavern

Formations in cavern

Formations in cavern
Formations in cavern

There are many lakes in the lower levels but we only got a glimpse of one. This lake is really quite a ways down but it is hard to tell that in the photo.

Lake in the cavern

These little guys are what saved Black Chasm Cavern from being quarried as an open pit mine. Black Chasm Cavern was granted National Natural Landmark status in 1976 after National Park Service personnel saw the helictite crystal display in the Landmark Room. Fewer than 5% of caves have these formations and they were described as “the best in the west.”



The Details

Black Chasm Cavern is privately owned and operated.

15701 Pioneer Volcano Rd.,
Volcano, CA 95689
Note that some sites and maps say Pine Grove rather than Volcano.

Sat & Sun 10-5
Mon-Friday 10-4
Check their website for holiday and holiday weekend hours

Adult $17.50
Child $9.50

Even if you spend a fair amount of time in the gift shop and the zen garden (free), you’ll only need a couple of hours to visit Black Chasm Cavern. That leaves you plenty of time to visit the Masonic Caves just down the road or even do a walking tour in the nearby town of Volcano. If you didn’t bring a picnic, there are several places to grab a bite to eat and a glass of local wine before or after your walk.

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View a wide variety of formations at Black Chasm Cavern including stalactites, stalagmites, flowstone and the vast array of rare helictite crystals.

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Until next time…

Thank you for sharing!


  1. Very cool! It’s so easy to put off seeing all the touristy places in our own backyards!

  2. This looks amazingly cool. A place I would totally visit.

  3. It seems like a cool place to visit.

  4. I love discovering new facets of this beautiful earth. These caves are stunning! And your photos are as well.

    My only suggestion would be mention the location (California US) at the beginning, because I didn’t know where this was until the very end!

    • Thanks so much for your comment and feedback. It’s funny that I didn’t do that as it is one of my pet peeves when I read other blogs and have to try to figure out where it is.

  5. Nature is amazing! These caves look and sounds so exciting! Definitely something to add to my bucket list!

  6. Fantastic photos and looks like a great place to visit. It’s definitely all to easy to skip the places that are close to home – I’m definitely guilty of that. Glad you finally got there. I think I’d want a bag of dirt to find some gems (I’m just a kid inside!) but I’m not sure how I’d feel about the tour. I’d love to see it all but the claustrophobic feelings might be a bit much. I can do small spaces but it’s more the ‘underground’ part of it.

  7. I’ve been to a couple of caves and caverns and I couldn’t agree more that pictures really can’t give them enough justice… They are just amazing to see 🙂 Your experience at Black Chasm Cavern looks great! Glad you had a great time! 🙂

  8. I absolutely love visiting caves and caverns from different parts of the world. To be honest I had never heard of this specific one before reading your post, so thank you for sharing so much informative details about it. I did a tubing cave tour in Belize which was amazing, hopefully someday I’ll be able to see this one! 🙂

  9. Fantastic photos and it looks like a unique place to visit. This post is super informative. I wouldn’t have known about this at all. Its great to explore things right on your doorstep. Maybe I should do that when I next go home considering I’m from the place they say is the most scenic place in the United Kingdom. I guess we take advantage of the things that have been right in front of us all this time. Great post

  10. briwonderingwandering

    This is so cool!! It’s kind of creepy but in a good way (so right up my alley). I’m adding this to my bucket-list of things to do whenever I make my way back to Northern California.

  11. I’m pretty sure there is something like this near me in Georgia! What an awesome place to explore! This is the kind of activities I love doing while traveling! I’m driving all through California this summer so I’ll have to check this out!

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