Giant’s Causeway

Location, History, Legend, & Facts

Oct 10, 2023 - 22:00
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Giant's CausewayGiant's Causeway

Giant's CausewayGiant's Causeway

Giant’s Causeway, Irish Clochán an Aifir, promontory of basalt columns along 4 miles (6 km) of the northern coast of Northern Ireland. It lies on the edge of the Antrim plateau between Causeway Head and Benbane Head, some 25 miles (40 km) northeast of Londonderry. There are approximately 40,000 of these stone pillars, each typically with five to seven irregular sides, jutting out of the cliff faces as if they were steps creeping into the sea.

Giant's CausewayGiant's Causeway

Formed 50 to 60 million years ago, during the Paleogene Period, the Giant’s Causeway resulted from successive flows of lava inching toward the coast and cooling when they contacted the sea. Layers of basalt formed columns, and the pressure between these columns sculpted them into polygonal shapes that vary from 15 to 20 inches (38 to 51 cm) in diameter and measure up to 82 feet (25 metres) in height. They are arrayed along cliffs averaging some 330 feet (100 metres) in elevation.

Giant's CausewayGiant's Causeway

First documented in 1693, the formation has been intensively studied by geologists. The Giant’s Causeway and its coastal environs were bequeathed to the National Trust (a British organization that promotes the preservation of natural and architectural wonders) in 1961. Subsequently, the site was extended to some 200 acres (80 hectares); it 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. Humans settled around the Giant’s Causeway in the 19th century, but the site is now uninhabited. It does, however, attract some 300,000 tourists annually. Deriving its name from local folklore, it is fabled to be the work of giants, particularly of Finn MacCumhaill (MacCool), who built it as part of a causeway to the Scottish island of Staffa (which has similar rock formations) for motives of either love or war.

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