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1 Indian Well Headquarters Tulelake, California96134Get Directions
Tours of Fern Cave are offered Saturdays at 2:00 p.m. from May 16th through October 31st, road conditions and staff availability permitting. Reservations can be made up to 3 weeks in advance by calling the Visitor Center during open hours only at 530-667-8113, and must be confirmed the day before the tour.