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Clinch Mountain is a mountain ridge in the U.S. states of Tennessee and Virginia, lying in the ridge-and-valley section of the Appalachian Mountains. From its southern terminus at Signal Point peak, which lies at the intersection of Knox, Union and Grainger counties near Blaine, Tennessee, it runs in a generally east-northeasterly direction to Garden Mountain near Burke's Garden, Virginia. It separates the Clinch River basin, to the north, and the Holston River basin, to the south. ==Geography== Clinch Mountain is a long ridge, about in length. It runs generally southwest-northeast, with numerous curves. Its north-south extent is , and east-west . Due to its size it is sometimes called a mountain range or complex. The ridge includes the sub-range of Knob Mountain, as well as four summits above 4,000 feet (Beartown Mountain, Flattop Mountain, Morris Knob, and Chimney Rock Peak). For its entire length, Clinch Mountain only has two true gaps during which the ridge is completely sliced in half and continues as Clinch Mountain on either side, divided by a creek. One of those is Moccasin Gap at Weber City, Virginia (the Norfolk Southern Railway and U.S. Highways 23-58-421 utilize that crossing because there is no elevation in the division of the mountain). Moccasin Gap is currently planned to undergo major mountain removal to accommodate a planned highway project. The natural appearance of the gap will be altered significantly. The second true gap in Clinch Mountain is Little Moccasin Gap, 30 miles northeast of Moccasin Gap, where U.S. Highway 58 Alternate crosses between Hansonville and Abingdon, Virginia. All other transportation crossings, as noted below, require an elevation climb to the top of the Clinch Mountain. When U.S. Highway 25E was realigned into a four-lane highway northwest of Bean Station, Tennessee in the 1980s, it was necessary to cut a new gap into the top of Clinch Mountain, which lowered the original gap elevation by 200 feet. That realignment, along with the lowering of Interstate 26-U.S. Highway 23 at Sams Gap on the Tennessee-North Carolina border, are the only instances of a highway gap in Tennessee actually lowering an original gap where a state or federal highway was built through. (Sams Gap was lowered by 150 feet to accommodate the new Interstate 26 highway). 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「Clinch Mountain」の詳細全文を読む スポンサード リンク
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