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Tulelake, California - July 9, 2019: Sign warning visitors to get a screening pass before entering caves in Lava Beds National Monument, preventing White Nose Syndrome, killing bats
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Tulelake, California - July 9, 2019: Entrance sign for Lava Beds National Monument in Northern California, allows visitors to enter underground caves
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Happy woman explorer holds a flashlight while caving and spelunking underground at Lava Beds National Monument in California
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Modoc County, CA - July 9, 2019: Cave closure sign to protect the Townsend Big Eared Bats from human distrubance
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Sign for the Upper Entrance to the Sentinel Cave in Lava Beds National Monument in California USA
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Directional sign in Lava Beds National Monument leads hikers to restrooms, caves and the Lyons Trail
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Blonde woman holds a flashlight under her chin, as if telling a ghost story. Light illuminates face
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View of the Tulelake Internment Camp (Camp Tulelake), a War Relocation Center during WW2 for for the incarceration of Japanese Americans
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Tulelake, California - July 9, 2019: Entrance sign for Lava Beds National Monument in Northern California, allows visitors to enter underground caves
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Happy woman explorer holds a flashlight while caving and spelunking underground at Lava Beds National Monument in California
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Tulelake, California - July 9, 2019: Sign for the Tule Lake National Wildlife Refuge, a popular spot for bird watching