This word, tombolo, came from Italy. As Italy is a peninsular state, and earth science was advanced earlier than other European countries, many of their languages associated with topography have become world standard. The picture shows one of tombolos being found on the west coast of the Izu Peninsula in Shizuoka Prefecture. This tombolo, 200 meters long, submerges at high tide. Tombolo sand bar is made up of fine sand in most cases though, the material of this one is pebbles worn smooth by tidal currents. There are about 40 tombolos in Japan since Japan is an island state, some 3,200 kilometers long.
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