The 50-minute guided walking tour departs from the Black Chasm Visitor Center and descends into the cave approximately 100 feet below the surface. A tour consists of no more than 20 people due to space constraints inside the cave and are offered on a first come, first served basis. Guests will view three chambers in the upper levels of this vertical cave where the most spectacular formations grow. A beautiful blue lake is located in the second chamber about 80 feet below the viewing platform. The cave is vertically oriented with 3 platforms and 5 flights of stairs. While the walk is not especially strenuous we recommend that guests with joint or heart/respiratory issues consider their abilities before participation. An experienced Cavern Naturalist will guide each group into the cave and explain the varied features of Black Chasm as well as the science of Speleology as it pertains to this remarkable cavern.
Black Chasm is located just outside the town of Volcano at an elevation of 2250 feet. Summertime temperatures outside the cave reach over 100 degrees and in the winter time temperatures can be at or below freezing with up to a foot of snow possible. The cave itself, however, is always 58 degrees inside.
There are no age requirements for the tour but please be aware that infants and children may not be carried in backpacks. Front-packs are ideal for this trip and we have several loaners we can provide if necessary. Carrying children in arm is possible but not advised due to safety reasons.
Black Chasm is a very well preserved cavern, to continue this we must restrict what guests can bring into the cave.
On the tour absolutely do NOT bring:
Food
Chewing gum
drinks
water (including bottled water or camel-back style back-packs)
The delicate chemistry and biology of the cave can be dramatically altered by any of these items.
Camera attachments such as extra lenses or tripods/selfie sticks. These items can be dropped and lost in the cavern and could possibly damage the ancient crystal formations irreversibly.
Backpacks or large purses are not permitted. These items reduce the amount of space available on the tour and could damage the cavern by scraping against the crystal walls.
Pets and emotional support animals are not allowed inside the cave for any reason. Service animals with proper documentation are allowed as per California law but please be aware that leashes are a tripping hazard and any mess is the responsibility of the owner.
Walking sticks are not allowed because they create a tripping hazard and can damage the crystal formations. Guests can bring their walking sticks to the mouth of the cave, but not inside. There are handrails along the steps throughout the cave.
Due to the stairs necessary to travel within the cavern, Black Chasm is not wheelchair accessible
Educator Package: Includes educational resources, interactive project ideas, trip organization, direct experiential opportunities to help better connect the experience with your students and complimentary chaperone ticket. Does not include student ticket.
Student Package: Includes engaging pre and post educational visit activities, trip organization and student ticket.
Black Chasm Cavern
Please use the information on this page (package type, venue name, price, etc.) to submit an order request with your school. Once your order is approved, your school will forward the request to us. We will then reach out to you with instructions on how to finalize your trip details and access accompanying resources. Once finalized, you will receive your e-tickets and any additional materials directly to your inbox within 1-3 business days. If you don't see our email(s), please check your spam folder prior to contacting us.
To ensure a smooth process, it is generally recommended to submit your order with your school AT LEAST 10 business days prior to your trip date, unless you are booking a venue that requires more advanced planning. *Please be mindful of your school's processing times and plan accordingly.