Allegany County has been, since colonial times, an important node on the nation's transportation network as a key transition point in the movement of goods and people to and from the ports of the Mid-Atlantic and the agricultural and industrial production centers of the Ohio Valley and Midwest. The Cumberland Narrows, a naturally-occurring watergap separating Wills and Haystack Mountains, serves as one of the few passages through what is otherwise one of the steepest rushes of the Ridge and Valley province. Because of this, Cumberland has been the site of both planned and completed transportation projects focused on connecting east and west.