Ireland, Giants Causeway in Northern Ireland. Check out the natural hexagonal basalt columns, which were formed during a volcano eruption 60 million years ago. The basalt columns appear on the other side of the channel as well in Scotland.
Explore some of the best things to do in Ireland. Home to craggy cliffs and windswept valleys, to ancient castles and modern cities and roads that unfurl like ribbons, Ireland is uncommonly rich with both natural wonders and manmade attractions.
Giant's Causeway is an area of about interlocking basalt columns, the result of an ancient volcanic eruption. Located in Northern Ireland, the tops of the columns form stepping stones that lead from the cliff foot and disappear under the sea.
The Picturesque Castles in Ireland You Can Actually Stay In
GIANT'S CAUSEWAY, Bushmills, Antrim, Northern Ireland -- Northern Ireland's most popular tourist destination: this large stretch of staircase-shaped rocks is the result of cooled lava from volcanic eruptions that took place over 65 million years ago.