From Larne to Ballycastle, this great road hugs the chalk and basalt cliffs for 30 km, much of it running along a raised fossil beach. A feat of engineering, the road boasts great geology and scenery, and is the perfect approach to the Giant’s Causeway Coast.
There are frequent stopping places, making it easy to inspect the many features along the way, such as fossil beds, brilliant-white chalk quarries, ancient volcanoes, and more. Built in 1832-42, it was a huge undertaking, with unique geological challenges, that opened up the Antrim glens.
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Image copyright Kenneth Allen