This story was originally published by Capital & Main and is reproduced here with permission.

A federal agency will offer tens of thousands of acres in northwestern Colorado that the nation’s largest elk herd relies upon for migration, foraging, and winter habitat to oil and gas companies for lease in the state’s biggest such sale in modern history.

More than 100 parcels included in a June 16 lease sale by the Bureau of Land Management encompass elk, pronghorn, and mule deer migration corridors that extend into southern Wyoming. Many sit in Moffat County, which bills itself as the “Elk Hunting Capital of the World” and relies on the pastime in part for its economic stability.

About two-thirds of the acreage in the 156,000-acre lease sale is just south of Dinosaur National Monument, a remote park that’s among the country’s over 40 certified International Dark Sky Places — areas with exceptionally dark night skies. Tourism officials in Moffat, who saw inquiries drop by more than half this spring, voiced concern that bright lights and truck traffic that accompany fossil fuel extraction could imperil this hard-won designation.

“Things like that could put that status in jeopardy,” said Tom Kleinschnitz, the county’s director of tourism. “In the long run, I think it’s important to keep these areas as pristine as possible.”