In this Wednesday, June 11, 2014, photo, a Bison rests inside the Theodore Roosevelt National Park located in the Badlands of North Dakota. The park of more than 70,000 acres sits atop the Bakken ... more 
In this Wednesday, June 11, 2014, photo, a Bison rests inside the Theodore Roosevelt National Park located in the Badlands of North Dakota. The park of more than 70,000 acres sits atop the Bakken shale, an oil-rich rock formation that for decades frustrated drillers who could not coax anything profitable from the ground. But advances in hydraulic fracturing and directional drilling have unlocked huge amounts of petroleum here. North Dakota is now the second-biggest oil producer in the U.S. after Texas. Oil development is strictly forbidden within the park itself, but park officials worry that the flares and noise from drilling just beyond the protected area sullies the natural spaces that drew Roosevelt here as a bespectacled young man in his mid-20s. (AP Photo/Charles Rex Arbogast) less 
1 / 1
Associated Press | Photo By Charles Rex Arbogast
Sun, Jun 22, 2014 9:15 AM EDT