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Culebra Cut
The Culebra Cut, formerly called Gaillard Cut, is an artificial valley that cuts through the Continental Divide in Panama. The cut forms part of the Panama Canal, linking Gatun Lake, and thereby the Atlantic Ocean, to the Gulf of Panama and hence the Pacific Ocean. It is from the Pedro Miguel lock on the Pacific side to the Chagres River arm of Lake Gatun, with a water level above sea level.
Construction of the cut was one of the great engineering feats of its time; the immense effort required to complete it was justified by the great significance of the canal to shipping, and in particular the strategic interests of the United States of America.
''Culebra'' is the name for the mountain ridge it cuts through and was also originally applied to the cut itself. From 1915 to 2000 the cut was named ''Gaillard Cut'' after US Major David du Bose Gaillard, who had led the excavation. After the canal handover to Panama in 2000, the name was changed back to ''Culebra''.〔(【引用サイトリンク】url=http://www.pancanal.com/eng/legal/reglamentos/navigation-compilation.pdf )〕
==Construction==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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