Cave of the Mounds was discovered on August 4, 1939. Come celebrate our 86th anniversary with a week packed with fun! From August 4th to August 8th, 2025, special events happening both above and below ground.

In the Cave, there will be a special flashlight experience like the first explorers in the cave for every person visiting during this event. Free History Walks across our property at 10 AM & 1 PM and the Historic Brigham Farm will be open with historic displays available for free!

No need to sign up or pre-order, all activities can be added at the door. More activities will be announced closer to the event. Stay tuned for more!