Cave of the Mounds 21 mi
A cave in Blue Mounds, Wisconsin with 45-minute to 1-hour guided tours, 70 feet down at a steady 50°F.
Blue Mounds, WI, 50°F inside, from $26.99
Caves near Madison, WI
8 show caves with public tours within 150 miles of Madison. The closest is Cave of the Mounds, about 21 miles away, and 2 are within 60 miles.
Distances are straight-line miles from downtown Madison; driving takes longer. Tour details checked 2026-10-22 against each cave's own site.
Eagle Cave 59 mi
A Wisconsin cave with guided tours Thursday to Sunday in summer and an in-cave overnight exploration program in the cooler months.
Blue River, WI, from $16.00
Kickapoo Indian Caverns 75 mi
The cave in the Kickapoo Caverns Nature Preserve near Wauzeka, Wisconsin, open only on occasional guided events such as the Conservancy's bat ecology tours.
Wisconsin
Crystal Lake Cave 76 mi
A cave near Dubuque with 45-minute walking tours through nearly three-quarters of a mile of limestone passages, plus black-light and wild cave tours.
Dubuque, IA, 50°F inside, from $22
Spook Cave 96 mi
A boat tour through a cave near McGregor, Iowa, 35–40 minutes long at 47°F, open May to October.
McGregor, IA, 47°F inside
Maribel New Hope Cave 115 mi
A free-to-enter cave park in Maribel, Wisconsin; New Hope Cave opens for tours on the third Sunday of each month, May to October.
Maribel, WI, from $5
Niagara Cave 137 mi
A Minnesota cave with one-hour guided tours of about a mile underground, past fossils, an underground stream and waterfall, and a wedding chapel.
Harmony, MN, 48°F inside
Mystery Cave 147 mi
Minnesota's state park cave, with an ADA-accessible one-hour scenic tour on paved trails at 48°F; the 2026 season has ended and tours resume May 8, 2027.
Minnesota, 48°F inside, from $15