What is the name of the famous rock formation in Northern Ireland?

The famous rock formation in Northern Ireland is called the Giant's Causeway. It is located on the northeast coast of County Antrim and is a UNESCO World Heritage Site. The Giant's Causeway is made up of around 40,000 hexagonal basalt columns that are a result of an ancient volcanic eruption. Each column is six-sided, and the tops form stepping stones that lead from the cliff foot and disappear under the sea.

The Giant's Causeway legend says that it was created by the giant Finn MacCool as a roadway to cross the sea and fight his rival giant, Benandonner. When Finn arrived, he realized that Benandonner was much bigger than him, and he fled back to Ireland. Benandonner followed him, but upon seeing the size of Finn's baby, he thought that Finn must be gigantic himself, and he high-tailed it back across the causeway to Scotland, ripping up the causeway as he went.

The Giant's Causeway is a popular tourist destination, and visitors can explore the basalt cliffs, take a guided tour or audio tour, visit the Giant's Causeway Visitor Centre, and see the various rock formations that make up the site. The rock formation is open year-round and offers spectacular views of the North Atlantic Ocean.