Thursday, November 17, 2011

Onbashi. The biggest natural bridge in Japan

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Tojo Town is a small town in the mountains of NE Hiroshima Prefecture. Its draincover depicts maple leaves and the Taishaku River flowing through Onbashi, the biggest natural bridge in japan.

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Onbashi is 90 meters wide, stands 40 meters high, and is 18 meters thick. It is composed mostly of limestone as it is in a karst.

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It is believed to be the third biggest natural bridge in the world, though I suspect there are different ways of measuring bigness.

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Onbashi means "male bridge", and its female counterpart, Menbashi is further downstream though it is now under the surface of Shinryu Lake, a reservoir created when the gorge was dammed in 1924

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Being a karst, there are other natural bridges and a multitude of caves in the area.

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