Caves in Minnesota

Minnesota's cave geography centers on Mystery Cave near Spring Valley — the state's longest cave at over 13 miles of mapped passage in limestone and dolomite below the Root River. The geology is part of the same Driftless Area karst that runs through northeast Iowa and southwest Wisconsin, unglaciated terrain where karst development has been undisturbed since before the last ice age.

Every cave listed here is on public or accessible land. Always bring three light sources, water, and let someone know your plans before entering any undeveloped cave. Temperature inside: typically 50–62°F year-round. Explore all caves on the Trek4Free map →