Night events are scheduled in national parks and game reserves through December . Alligator River National Wildlife Refuge is home to endangered red deer . If you go : The programs are free , but park admission is $ 20 per vehicle . Scorpions glow under ultraviolet light because of proteins in their exoskeletons . Thousands of bats in the Carlsbad Caverns come together every evening to hunt .
Night events are scheduled in national parks and game reserves through December . Alligator River National Wildlife Refuge is home to endangered red deer . Scorpions glow under ultraviolet light because of proteins in their exoskeletons . Thousands of bats in the Carlsbad Caverns come together every evening to hunt .