Hundreds of thousands of abandoned US mines were left behind after mining booms; bats, snakes and bobcats now use them as refuges | World News
PC: Josh Hydeman/ Bat Conservation International Across the United States, former gold, coal and other mines are becoming important refuges for bats and other wildlife. Their tunnels, shafts and crevices can provide shelter in areas where natural caves are limited. However, unstable structures and environmental hazards make these sites dangerous for people and potentially harmful…