National Geographic Travelのインスタグラム(natgeotravel) - 2月9日 21時09分

photo by @andrea_frazzetta // Northern Ireland's Giant’s Causeway is a volcanic formation of nearly 40,000 mostly hexagonal columns, forged 60 million years ago when molten lava cooled quickly in the ocean water and contracted into crystallized basalt pillars.
When you first see this place you understand why the ancients believed the Causeway was not a natural feature. The vast expanse of regular, closely packed, hexagonal stone columns beneath the waves looks for all the world like the handiwork of giants.
First documented in 1693, the formation has been intensively studied by geologists. The Giant’s Causeway was designated a UNESCO World Heritage site in 1986. It is protected not only for its beauty but also because its cliffs, seashores, marshes, and grasslands are home to some 50 species of birds, as well as to more than 200 species of plants.
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