Giant's Causeway(redirected from Giant's Causeway NNR)
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A basaltic formation on the northern coast of Northern Ireland. It consists of thousands of columns of volcanic origin forming three natural platforms. According to legend, it was once a bridge for giants crossing between Ireland and Scotland.
(Placename) a promontory of columnar basalt on the N coast of Northern Ireland, in Antrim: consists of several thousand pillars, mostly hexagonal, that were formed by the rapid cooling of lava and the inward contraction of the lava flow