Praia do Submarino, Alvor, Algarve, Portugal.
This is one of those secluded places that very few people get to see. The route down to this private cove is quite challenging and dangerous in parts. You have to find a hidden tunnel only just big enough to crawl through, dragging your gear behind you. Boy it's worth it though.
A wonderful unspoiled place. Rocks just off the shoreline appear from the waters like a submarine, giving this beach its name.