Blue Lagoon

Early morning swim at the Blue Lagoon - just around the corner from Abereiddi Beach.

The Lagoon just to the north of the beach, was formerly the main slate quarry of the St Brides Slate Company and was active up until 1910. The slate gives a brilliant aqua blue colour to the water.

Pembrokeshire played a lead role in the slate industry, with around 100 quarries in the county in the late 18th century. Slate that was extracted from Abereiddi was transported by tramway to the neighbouring Porthgain Harbour and shipped out. The Blue Lagoon was formed when the channel connecting the quarry to the sea was blasted, allowing the sea to flood in.

Great swim from the beach afterwards in the rollers - the forces of nature are part of the beauty and appeal of the coast.

There are few places in Pembrokeshire that feel the power of the sea more than Abereiddi. Since the deteriorating sea wall was removed in 2012, the pace of change has sped up dramatically. During the winter storms of 2014 there were overnight land losses of more than five metres.