The Giant’s Causeway is known worldwide for its layered basalt columns and the only UNESCO World Heritage Site in Northern Ireland. These natural polygonal features were created 60 million years ago by a volcanic eruption. Today they are the most important center of a designated area of outstanding natural beauty. There are three different type of periodic volcanic activity led to the lower, middle and upper basalts. The central basalt rock forms the famous amphitheater of columns in the form of hexagons. This is the science, but legend has it that it was shaped by the mighty giant Finn McCool, who left his old house to fight his enemy Benandonner throughout Scotland.