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Natural Bridge State Park (Massachusetts) : ウィキペディア英語版 | Natural Bridge State Park (Massachusetts)
Natural Bridge State Park is a Massachusetts state park located in the city of North Adams in the northwestern part of the state. The park's chief feature, for which it is named, is the only natural white marble arch/bridge in North America. Visitors can also view the remains of an abandoned marble quarry.〔 ==History== The bedrock marble from which the natural bridge was created is estimated to be some 550 million years old. Water from glacial runoff began carving the arch after the last Ice Age, 13,000 years ago.〔 The site of a marble quarry from 1810 to 1947 and a privately owned tourist attraction from 1950 to 1983, the site became a state park in 1985.〔 The arch and associated quarry have long attracted attention from hikers, including author Nathaniel Hawthorne who visited in 1838.
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「Natural Bridge State Park (Massachusetts)」の詳細全文を読む
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