History of Great Britain and Northern Ireland are famous for old castles, its well-known legends and giant dike. A Giant’s Causeway is rocky bulge on the north coast of Northern Ireland. It consists of more than 40 thousand regular polygonal rocky pillars. Each hexagonal column is wide between 40 and 50 cm in diameter and height of the rocky bumps is about 6 feet above the water. Scientists believe that this natural wonder of the world formed before about 50 million years ago from lava that erupted in this part of the planet, and then gradually cooled. The structure of rocks composed of basalt, confirms this theory. According to legend, folk hero, Finn Mac Kamheil made this rocky bulge to allow giants to cross over the ocean from Scotland to Northern Ireland. What distinguishes this from other rocky embankment areas in the seas is the regularity of its form. Both scientists and the legends cannot explain how such a mound was formed of regular shape – coincidence or not?