Passing by the massive, vertical rock walls in Sheep Canyon is BNSF’s Cowley turn out of Greybull, Wyoming, on the morning of June 22, 2017. The northbound local is following the Bighorn River through the scenic abyss passing milepost 414 on BNSF’s Casper Subdivision and is powered by a pair of six-axle EMDs—SD70MAC No. 8912 and SD60M No. 1410.