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The tombolo is a stone bar that leads from Dogashima to the three Sanshirojima Islands. |
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At high tide, the stone bar bridge is submerged under seawater, and reappears again at low tide. |
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People walk across to Sanshirojima Island over the tombolo bridge at low tide. They have about two hours |
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A tombolo is a rare thing in nature. Once rocky stacks or island rocks have been eroded down to low levels, the materials for building up the tombolo disappear and gradually so does the tombolo. |
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Once across the tombolo natural bridge to Nakanojima Island, walkers tend to rest a while around the tidal rocks before turning back. |
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Dogashima is visited for the sight of its splendid white cliffs ... |
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and for its spectacular rock formations. |
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Dogashima coast is composed of mainly of volcanic andesite rock. |
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The layered lines of rock add to the beauty of the cliffs. |
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The most famous natural rock formation is this skylight cave called "Tensoudo". It is usually approached and viewed from the sea by boat on a calm day. |
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However, it is also possible to view the skylight opening of Tensoudo from above by walking the Dogashima trail. The Tensoudo cave is also made of andesite rock. |
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