1.9K views · 88 reactions | In Wyoming's Bighorn Basin, we can look forward to panoramic mountain views every day | Basin Reboot | Facebook

Wyoming’s Powder River Basin hosts the North Antelope Rochelle Complex—largest coal mine in the U.S.—and the Black Thunder Mine. Together, they produced 22 percent of the U.S. coal supply in 2014. These images (June 29, 1984 to June 21, 2016) show the landscape’s change from predominantly agricultural use to open-pit mining. USGS officials estimate that these mines have less than 20 years of economically recoverable coal remaining, after which the companies will be required to reclaim the land.