After swimming for about 60 m into the cave over a bottom of fine sand and shingle, several loose boulders form an upwards slope leading to second massive cave where we are able to surface in a large air pocket totally enclosed in rock. The ceiling of this cave is about 5 m above the water level while the furthest walls are approximately 35 m away. The sight of the blue open water with the sun shining through from the outer reef on the way out of this cavern is very impressive.
Billinghurst Cave
This large cave is located in a tight corner of a rocky coastline, and facing due north, it sees almost no direct sunlight, thus having very little natural light penetration.
