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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Seven Tubs Natural Area ： ウィキペディア英語版 Seven Tubs Natural Area The Seven Tubs Natural Area is a publicly accessible recreation area located in Luzerne County, Pennsylvania, and owned by the Pennsylvania Department of Conservation and Natural Resources. Continuously flowing glacial meltwater gouged a line of smooth tubs in gritty sandstone over 12,000 years ago. The tubs are potholes formed by the flowing water. The site is part of a nature area in the Pennsylvania mountains about south of downtown Wilkes-Barre.〔Litchman , Lori. "Seven Tubs Natural Area, Luzerne County." Greentreks Network. 2006. 19 Mar 2008 .〕 The site is popular among hikers for its easy accessibility and beginner-level hiking environment. ==Geography== The glaciers of the Ice Age were instrumental in shaping the physical features of the natural world that we see today. They too are responsible for the formations of the tubs. As water melts over long periods of time, its eroding capabilities become much more substantial. Glacial melting produced large volumes of flowing water for many years, contributing to formations in the different types of rock common to the area. Common geological rock classifications in the area are limestone, shale, and coal, but the tubs are formed mainly out of gritty sandstone.〔"Archbald Pothole State Park." DCNR. 2008. 18 Mar 2008 .〕 ''Wheelbarrow Run'' is a stream that runs through the tubs and eventually meets up with the larger ''Laurel Run''.〔 Both flows have cut gorges and canyons out of the surrounding landscapes that have created an opportunity for hikers to explore. This area is known as ''Whirlpool Valley''.〔 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「Seven Tubs Natural Area」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.