Mystery Cave Spring — Forestville — Conditions Guide

July 2026

Guide coming soon

We generate a weekly conditions guide for every spring using live data and local knowledge. Check back after the next Sunday morning update.

About Mystery Cave Spring — Forestville

Minnesota's longest cave at 13 miles. Two underground lakes fed by springs. Cave tours available. The spring system creates unique cave pearls and formations. Forestville/Mystery Cave State Park. Cold 48°F year-round. Unique Midwest karst spring system.

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