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Preserving the Paradise Mountain Wildlife Corridor Learn More Welcome to Hellhole Canyon Plan your visit Preserving the Paradise Mountain Wildlife Corridor Learn More Help us protect our communitys open spaces Join us Our mission The Friends of Hellhole Canyon FOHC supports the preservation of and responsible recreation within the Hellhole Canyon Open Space Preserve and nearby open spaces. LATEST NEWS Butterfield Trails Ranch park planning kicks off at public event. On Saturday November 16 2024 the Friends of Hellhole Canyon joined San Diego County representatives and other local advocates at the future park site of Butterfield Trails Ranch in Valley Center. This event began the countys park planning process by offering fun activities and conversations about the parks design.