The Giant's Causeway is an area of about 40,000 interlocking basalt columns, the result of an ancient volcanic eruption. Most of the columns are hexagonal, although there are also some with four, five, seven or eight sides. The tallest are about 39 ft high.
According to legend, the columns are the remains of a causeway built by a giant. The story goes that the Irish giant Finn MacCool, from the Fenian Cycle of Gaelic mythology, was challenged to a fight by the Scottish giant Benandonner. Fionn accepted the challenge and built the causeway across the North Channel so that the two giants could meet. In one version of the story, Fionn defeats Benandonner. In another, Fionn hides from Benandonner when he realizes that his foe is much bigger than he. Fionn's wife, Oonagh, disguises Fionn as a baby and tucks him in a cradle. When Benandonner sees the size of the 'baby', he reckons that its father, Fionn, must be a giant among giants. He flees back to Scotland in fright, destroying the causeway behind him so that Fionn could not follow.
We climbed all over it and sat among the rock formations all the while the sea blasted at the edges. Truly a spectacular day!