The walk starts at Abercastle, a small harbour with a Neolithic burial chamber at Carreg Sampson just inland from the coast-path. The harbour was also the landing site of the first single handed atlantic sailing west to east in 1876 starting from Gloucester, Massachusetts by the Danish born fisherman, Alfred "Centennial" Johnson. You will pass Aber Draw, the beach for the village of Trefin. The path down to the beach passes a ruined mill complete with mill stones. The walk ends at Porthgain (meaning beautiful port), the industrial harbour was used in the hundred year period to 1931 for the export of roadstone, slate and bricks and exudes the atmosphere of the industrial revolution with the old brickworks, quarries and associated infrastructure.