Dwejra is perhaps the archipelago's most spectacular natural landmark. Here, geology, time and sea have worked together to produce some of the most remarkable scenery on the Islands - The Azure Window, the Inland Sea, Fungus Rock, sheer cliffs and a rocky coastline yielding fossilised remains of sea creatures dating from the Miocene period. The Inland Sea, and Dwejra Bay itself, were created millions of years ago when two limestone caves collapsed. The shallow inland lagoon is linked to the sea via a 50-metre cave. The `Sea' is used by fishermen, swimmers and as access point for divers.