Here is a well known landmark on the Pembrokeshire Coast - The Blue Lagoon. Previously a quarry providing slate to the village of Porthgain a few miles to the North, it was abandoned in the early 20th Century due to flooding. It gets it's... greeny-blue colour due to the mineral content of the slate and is now a popular venue for divers and adventure groups practicing 'coasteering'. To get this shot I have to venture down a very unsteady piece of cliff and out onto a ledge overlooking the lagoon, not my favourite thing to do but it was worth the view.
Nigel J Bevans