Before the arrival of men of science, myths and legends contributed to explain the strange shape of landscapes such as the Giant's Causeway.

Generations after generations the story of the legendary giant who built the Causeway is told. This giant was Finn MacCool. It is the Anglicized version of his Irish name, Finn mac Cumhaill. Although Finn MacCool becomes an integral part of the myth of the Giant's Causeway, he was in the leader of a clan of warriors and was known in Irish history as Fianna who lived around the 3rd century before Christ.

The legend says that Finn MacCool wanted to confront his giant Scottish rival known as Benandonner. The two giants never met, so Finn built huge marches across the sea to allow the Scottish giant to come to Ireland and face the challenge which had been started. The story takes a humorous turn when Finn, afraid because he saw the huge Benandonner, ran away and asked his wife, Oonagh to hide him. They say that Oonagh disguised Finn as a baby and put him in a huge cradle. When Benandonner saw the baby's size, he deduces that the father would really be huge. Frightened, he fled and destroying the Causeway so that Finn couldn’t follow him.

The story ends by explaining that the reason the Giants Causeway are here in North Antrim, is that we found similar columns in the Fingal's Cave on the Scottish island of Staffa in the North. These remains are both ends of the remaining Causeway built by Finn MacCool.

The story of this battle narrowly averted through deceit can make us smile when we visit the Causeway of the Giants, but we must remember that it contributed to the notoriety of the name of Finn because it is cited in many locations throughout Ireland and Scotland.