There are plenty of hideouts in the rugged terrain of the Ozark Mountains where searchers are hunting for an ex-lawman known as the “Devil in the Ozarks.” Others are not only off the grid but beneath it, in the hundreds of caves that lead to vast subterranean spaces. A spokesman for the Arkansas Department of Corrections says caves in the area have been a priority for searchers. He said they present one of multiple challenges for authorities searching for Hardin. He escaped Sunday from the North Central Unit — a medium-security prison also known as the Calico Rock prison — by impersonating a corrections officer.