Giants Causeway
The geology explanation for the Giant’s Causeway is solid: 50 to 60 million years ago, lava flows cooled and contracted, cracking into hexagonal columns. The myth is better: the Irish giant Fionn Mac Cumhaill built a causeway across the North Channel to fight his Scottish rival Benandonner, then disguised himself as a baby when Benandonner arrived and turned out to be even larger. Benandonner ran back to Scotland, destroying the causeway behind him. The opposite end, Fingal’s Cave on the Isle of Staffa in Scotland, has identical columns. Geology explains this as the same lava flow. The mythology explains it as the Scottish end of Fionn’s road.
Both are worth knowing.
Access
The causeway itself is free. What you pay for is parking and the visitor centre exhibition. Pre-book online; the National Trust asks all visitors, including members, to reserve arrival slots as the site manages visitor flow throughout the day. Arrive before 10am for fewer people and better light.
Walking from Bushmills village (about 3 kilometres each way along the Causeway Coastal Route) avoids the car park charge entirely. The Causeway Rambler bus service (402) runs from Coleraine and Bushmills in summer. Pre-book a Park and Ride from Dundarave Car Park in Bushmills if driving.
The Causeway and the Cliff Walk
The columns range from 15 to 40 centimetres across and up to 12 metres tall; they are hexagonal, some pentagonal or octagonal, and so geometrically regular they look manufactured. Walking on them is permitted and they are solid underfoot.
The cliff walk east of the main causeway is more rewarding than most visitors realise. The Organ formation (tall parallel columns resembling pipe organ pipes) is about 500 metres east. The Hamilton Seat viewpoint above gives the context the ground-level path can’t: you see the entire headland, the layers of basalt, and the relationship between the columns and the coast. The 2-kilometre return walk to Hamilton Seat is worth doing before heading back.
The Coast Beyond the Causeway
Carrick-a-Rede Rope Bridge, 7 kilometres east: a 20-metre rope bridge across a 30-metre drop, used by salmon fishermen since the 18th century. Timed entry required (GBP 11 per adult), book at nationaltrust.org.uk. The bridge sways. The cliff scenery is excellent.
Dunluce Castle, 9 kilometres west: a ruined 14th to 16th century MacDonnell clan castle on a basalt cliff above the sea. Part of the medieval kitchen fell into the sea in 1639 taking servants with it. Entry around GBP 6. Closed Mondays.
Bushmills Distillery in the adjacent village claims to be the world’s oldest licensed whiskey distillery (licensed 1608). Guided tours run daily for around GBP 12 including a tasting; book online.
Where to Eat and Stay
Ursa Minor bakery in Ballycastle (14 kilometres east) has bread and lunch dishes using local grain; arrive early. The Bushmills Inn is the main hotel and restaurant near the causeway, in a converted coaching inn with peat fires and a whiskey bar.
The north Antrim coast can be cold and wet in any month. Waterproofs are not optional even in July.