This is a true caving adventure that requires belly crawling through some tight spaces. Our experienced guides will lead you through some areas off of the main tour route that almost no one else sees. This extreme adventure is not for the faint of heart and is not recommended for the claustrophobic. We offer three tour options: The Bookworm Alley Tour, The Fairyland Tour, or the Combo Tour that includes the best of both routes.



Spelunking Tour is by Reservation Only – call (605) 255-4384
Tour includes a free digital souvenir photo, headlamp and 20% off Adventure Tour shirt. Reservations required; no refunds will be given. Discounts do not apply.
To qualify for the spelunking tour, guests must make it through a space 10″ x 22″. Guests need to be sure they can make the crawl before they make reservation. To test this at home we recommend the guest put a tension rod 10″ high in a doorway and crawl under. Wearing long pants, shoes with a sturdy sole, long sleeve shirt is recommended. You will get dirty, expect that. We supply caving helmets, headlamps, knee pads and elbow pads. All guests must sign a waiver.
Bookworm Alley Tour or Fairyland Tour: Each begins with the guided walking tour and then adds the off-path spelunking tour. Please allow for 2 1/2 hours for either option.
Combo Tour: Begins with the walking tour and spelunking through Bookworm Alley. This will be followed by an above ground rest break. (A great time to refuel with some food and water!) Then it’s back into the cave for the second portion of the tour, spelunking through Fairyland! Please allow for about 5 hours in total.
Other Info: The max tour size is 5 guests and a trip guide. Minimum age is 12, with parent or legal guardian signing the waiver. Guests that are 16 and under must have a parent or legal guardian accompany them on the tour.