Oobo Koboke

Kita Tomomi

Aug 11, 2017

Come and witness the wonder of nature at the Oboke and Koboke Gorges, great valleys that were created by the rapids of the Yoshinogawa River after 200 million years. Spanning across roughly 8 kilometers, they look like majestic marble sculptures rising from the earth. If you visit in autumn, you’ll be amazed by how beautiful the golden leaves look, in the trees lining the riverside.

In Japanese, ‘Boke’ means ‘dangerous to walk along’. O-boke, which means big boke, and Ko-boke, which translates to small boke, are said to have been so named because their rocks are very dangerous to walk along, no matter how carefully or slowly you walk. Do tread carefully and watch your step!

Known for its beautiful scenery, these valleys have become a popular sightseeing spot for tourists and locals alike. From late March to around the end of May, flying carps are suspended along the valley to celebrate Chidren’s Day. This colorful display is one that is quintessentially Japanese, and I highly recommend visiting in that festive season.

「大歩危小歩危(おおぼけこぼけ)」は、2億年の時を経て吉野川の激流の侵食によって創られた約8kmにも渡る渓谷です。その見た目は大理石の彫刻がそそり立っているかと思ってしまうほど美しく、紅葉の時期には川を隔てて染まるオレンジ色に感動してしまいます。
また、名前の由来が面白く、「大股で歩くと危ないから大歩危」、「小股で歩いても危ないから小歩危」というどっちにしろ危ないの?と心配になってしまうユニークな説があります。
大歩危峡は国指定の天然記念物になっています。なぜなら、地層は普通、下の方から年代が古いはずなのですが、大歩危の地層は年代の古いものから新しい地層に逆転して見えるという現象が起きており、間近に見える美しい岩石やV字谷の貴重な地層の様子から、学術的にも日本列島の成り立ちがわかると言われています。全国的にも珍しい場所として、観光客に人気の観光スポットです!

3月下旬から5月上旬にかけて、日本の子供の日を祝って大きな鯉のぼりが吊るされます。この鯉のぼりは各地から寄贈されたみんなの想いが詰まったものです。ぜひ、秘境のこのシーズンに行くことをおすすめします。

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