Fern Cave Tours
Most caves in the Monument can be explored anytime without a reservation. Fern Cave, however, is closed for resource protection reasons and is open to visitors by ranger-guided tour only. The entrance area is not open to the public at any time other than during a ranger-guided tour. The exceptional rock art and sensitive biotic environment in Fern Cave are among the reasons that only guided tours are allowed here.
The tour is offered on Saturdays at 2:00 p.m. from June 7, 2014 through October 25, 2014, weather and road conditions permitting. Please note that there will be no tours on July 5th or September 6th.
Tour Reservation Procedures & Requirements:
Did You Know?
The youngest lava flow associated with the Medicine Lake Shield Volcano, at about 890 years old, is Glass Mountain, a pure obsidian flow located just south of the monument.