In St. Catherine's Island, Tenby. They can only be entered at low tide.
Description
There are 3 main sea caves which go right through the island.
The first two caves are virtually archways on the Western end of the island, just above the low tide mark.
The third cave is situated on the Eastern end of the island and is one of the longest caves for which a light is required. From the Northern end, one enters a knee-deep pool of water and the roof is supported at this point by a column of rock. A short but tricky 3.5 metre climb follows. Daylight is seen again and one can descend a slope of boulders to the seashore on the South side of the island.
Leaving via the Southern entrance and traversing West for about 35 metres, one is confronted by Cave No.4, which is about 10 metres long and ends in a 10 metre high aven. The entrance is rather narrow.
There is a cave No.5, which is located over cave No.3 and is a small rock shelter which shows some signs of solutional activity.
History
Hydrology
Conservation
SSSI: 1429 Tenby Cliffs and St. Catherine's Island (M)
Survey
References
Caves of West Wales, Oldham, T., p.56-61. With plan.
