Cave of the Mounds, Natural limestone cave in Blue Mounds, Wisconsin.
Cave of the Mounds is a limestone cavern in Blue Mounds featuring multiple chambers filled with mineral deposits. The passages showcase calcite formations shaped by water over thousands of years, creating layers and hanging structures throughout the underground space.
Workers uncovered this cave in 1939 during quarrying operations on the site. The discovery led to immediate protection of the interior to prevent damage to the delicate formations.
The Chicago Academy of Sciences recognizes this cave as the most notable geological formation in the upper Midwest region of the United States.
The cave stays cool inside year-round and has tight passages and stairs to navigate. Wear comfortable shoes with good grip and bring a jacket, as the ground is often wet and slippery.
This cave hosts specialized bacteria that create colored mineral deposits throughout the passages. These microscopic organisms work slowly to change the appearance of the cavern over time.
The community of curious travelers
AroundUs brings together thousands of curated places, local tips, and hidden gems, enriched daily by 60,000 contributors worldwide.
