GETTYSBURG -- A South Dakota sheriff says two Minnesota men are lucky to be alive after they drove underneath a stalled semi truck towing a flatbed.

Potter County Sheriff Alan McClain says he's amazed the men were not decapitated.

McClain says the crash happened about five miles west of Gettysburg on U.S. Highway 212, about 6:15 a.m. Saturday when it was still dark. He says the semi missed its turn and attempted a U-turn, and the tractor wheels went off the road and the semi got hung up.

Potter says a pickup truck carrying 29-year-old Shane Hanson, of Clearwater, Minn., and 36-year-old Chad Fobbe, of Monticello, Minn., came down the highway and went under the trailer. McClain says both men were treated at a Pierre hospital and released the same day.