Alligator River National Wildlife Refuge — Red wolves have been on the endangered species since 1967, and Eastern North Carolina is the only place you can hear their howls. Courtesy USFWS Alligator River National Wildlife Refuge — There are an estimated 110 to 120 red wolves left, according to the Red Wolf Recovery Program. Courtesy USFWS Pahranagat and Moapa Valley — Nevada's national wildlife refuges are home to scorpions, an arachnid with an exoskeleton that glows under an ultraviolet light. Courtesy Jim Boone Rocky Mountain National Park — Colorado's elevations make it one of the best places in the Western Hemisphere for weekend warrior astronomers to stargaze. Courtesy National Park Service Bryce Canyon National Park — Bryce Canyon National Park in Utah is home to hoodoos, oddly shaped rock formations that are beautiful to see in the daytime and at night. Courtesy National Park Service Carlsbad Caverns National Park — New Mexico's Carlsbad Caverns National Park hosts nightly bat watches in the Bat Flight Amphitheater. Courtesy Peter Jones/National Park Service Carlsbad Caverns National Park — The bats swirl out of the cave just before dusk to hunt and return gorged with food before dawn. Courtesy National Park Service Prev Next
