The Great Allegheny Passage Trail forms a hiking and biking route stretching approximately 150 miles from Pittsburgh, Pennsylvania, to Cumberland, Maryland, where it connects with the C&O Canal Towpath to reach Washington, DC. The trail is the culmination of many years of work by the Allegheny Trail Alliance, which joined seven separate trail organizations from Pennsylvania and Maryland to acquire and develop the land. Formerly an Indian path, trade route, military road, railway link, and part of the original National Road-the trail is truly a path to American history.

An Uncommon Passage guides readers through the fascinating story of this trail, as a critical link in the western expansion of colonial America, and a pathway to the development of the Southwestern Pennsylvania region. The book explores the British outposts and forts, early settlers and frontier life, developing towns and cities, rise and predominance of industry, later environmentalism and preservation, natural resources, rivers, flora and geological features that comprise the trail and its environs.

The engaging narrative is complemented by an extensive selection of historical illustrations and the contemporary photography of Paul g. Wiegman, all of which reveal the stunning scenery and pictorial history of the region. An Uncommon Passage offers a journey through both time and space to capture the heritage and surroundings of a region that would grow to prosper and help build a nation.