When most people picture a turquoise swimming hole, they usually see a tropical location, surrounded by lush green vegetation, and water warmed by the summer sun. Well, Blue Lagoon in Wales might be a swimming hole, but it has nothing in common with a tropical paradise.
This swimming hole in Pembrokeshire, Wales is actually the remnants of a slate mine called St Brides Slate Quarry. The quarry is located in the small town of Abereiddy, on the coast of Wales. This area is typically gray and rainy, a stark contrast to the brilliant green hue of the water in the (not so) aptly named Blue Lagoon.