Giant’s Causeway

• The Giant’s Causeway is an area of vertical hexagonal Basalt Columns located 3 miles (4.5km) north of Bushmills in Northern Ireland. It was declared a UNESCO World Heritage Site in 1986 and is managed by the National Trust.
• The columns lie at the foot of the cliff and lead into the sea. Some of the columns are also square, pentagonal, heptagonal as well as octagonal.

Similar Geological Structures

• Structures with similar hexagonal Basalt columns exist in Scotland at:
  • The whole island of Staffa.
  • Drumadoon Point, on the Isle of Arran.
  • The island of Ulva, next to the island of Mull.
  • Studlagil Canyon in Iceland.

Giant’s Causeway