I-68 passing through a road cut in Sideling Hill, just west of Hancock, Maryland. The interstate replaced US40 which crossed over the hill. An excellent exposure of a syncline formation.

340 feet deep, the 1984 cut exposes rocks formed during the early Carboniferous era (aka Mississipian) – marine rocks laid down roughly 330 million years ago; between the Devonian and late Carboniferous (aka Pennsylvanian) eras.

A rest area was built with a pedestrian bridge built across the interstate. There was once a museum located here but it closed in 2009.

Other than the rest area, there is no place to safely stop on the interstate to view the cut close-up. Barriers are in place to prevent an attempt.

Even for one used to the spectacular exposures of stratigraphy in the west, this exposure stands out as one of the more spectacular.