Bay Point, CA

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Explore the underground through a guided tour; learn its history, geology, and technology. Ninety minute advanced registration tours are offered at 11am, 1pm, and 2pm. Call number below or go to www.ebparksonline.org. A 10am tour is available to groups of ten or more on weekends (not available for online registration). First-come, first-served tours are offered at noon and 3pm. Purchase tickets at the visitor center. Dogs not permitted on the tour. Reg. Required: 1-888-EBPARKS.