Mystery Cave, the longest cave system in Minnesota, is once again open for tours.
Scenic tours of the southeast Minnesota cave started again Thursday, July 1, and will operate on a first come, first serve basis through July 12. After that, the Minnesota DNR recommends making a reservation in advance, though unsold tickets may be available for walk-ins.
Last summer, amid the COVID-19 pandemic, tours of the popular cave were canceled. But things aren't quite returning to normal.
Currently, the DNR is only offering the one-hour scenic tour, a .75-mile walk on modern paved trails and metal bridges that is both wheelchair- and stroller-accessible. Tours run 10 a.m. to 4 p.m., Thursdays through Mondays, and will end Sept. 6.
Other tours that have been available in the past — such as the lantern-lit tour, or four-hour "wild caving" tour — are listed as unavailable in 2021.
Mystery Cave is part of Forestville/Mystery Cave State Park in Preston, Minnesota. The system was discovered in 1937, and has over 13 miles of underground passageway.