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The Potomac Heritage Trail, also known as the Potomac Heritage National Scenic Trail or the PHT, is a designated National Scenic Trail corridor spanning parts of the mid-Atlantic and upper southeastern regions of the United States that will connect various trails and historic sites in the states of Virginia, Maryland, and Pennsylvania, and the District of Columbia. The trail network includes of existing and planned sections, tracing the outstanding natural, historical, and cultural features of the Potomac River corridor, the upper Ohio River watershed in Pennsylvania and western Maryland, and a portion of the Rappahannock River watershed in Virginia. Unlike many long-distance hiking trails such as the Appalachian Trail, the Potomac Heritage Trail is a general route with numerous side trails and alternatives, some in parallel on each side of the river. Currently, many of these are separate, connected to the others only by roads. ''Potomac Heritage Trail: A Hiker's Guide''〔Lillard, David Edwin, and Ed Talone. 2006. Potomac Heritage Trail: A Hiker's Guide. Great Allegheny Press, West Newton, Pennsylvania. ISBN 0-9717475-5-5.〕 is a guidebook addressing the PHT's various sections, and some intervening or adjacent areas. The guidebook ''The C&O Companion''〔High, Mike. 2000. The C&O Canal Companion. Johns Hopkins University Press, Baltimore and London. ISBN 978-0-8018-6602-9〕 is useful for this major section of the PHT. For more information visit www.nps.gov/pohe. The PHT crosses another National Scenic Trail, the Appalachian Trail, near Harper's Ferry, West Virginia. The PHT also coincides with the American Discovery Trail along the portion of the C&O Canal Towpath from Oldtown, Maryland to Washington, D.C. == Initial sections == Three substantial sections of the trail were in existence when the Potomac Heritage Trail officially became a National Scenic Trail in 1983: *The Chesapeake and Ohio Canal Towpath, which runs along the Maryland and D.C. side of the Potomac River from Georgetown in Washington, D.C., to Cumberland, Maryland *The Mount Vernon Trail in Virginia, which runs from Rosslyn in Arlington to Mount Vernon, close to the shore of the Potomac *The Laurel Highlands Hiking Trail, running for in Pennsylvania from Ohiopyle State Park to the Conemaugh Gorge, near Johnstown These trails have different surfaces: gravel, asphalt, and natural surface, respectively – a fact that illustrates the general heterogeneity of the PHT, compared to other National Scenic Trails. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Potomac Heritage Trail」の詳細全文を読む スポンサード リンク
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