Giants Causeway is located on Northern Irelands north coast, between Belfast and Derry (the blue pin on the map below), the stretch of coastline is a marvel and draws hundreds of tourists a day. It was declared as Irelands first National Heritage Site by UNESCO in 1986. I was lucky enough to visit the causeway on day 2 of my recent roadtrip around Ireland. It is a sight not to be missed.
According to nearly all sources on the internet, the causeway is the result of ancient volcanic activity, ancient being roughly 50-60 million years ago. What was created was (again roughly) 40,000 unique hexagonal basalt columns, some of which are said to stand at 12m tall.
According to the National Trust website a major £18.5 million project to restore the headland and create a new Giant’s Causeway Visitor Centre in underway, with enhanced trails and world class interpretation on the menu. The project is said to be well under way and on schedule to finish by summer 2012
Opening hours – see http://www.nationaltrust.org.uk/giants-causeway/opening-times/
From the causeway centre to the causeway – there is a (different) minibus that run from the centre down to the causeway and back up again. This minibus is not free. Adults are £2 one way.