SH 332 706 (Porth Trecastell)
SH 339 676 (Porth Aels)
SH 387 628 (Porth yr Ogof)
See Also the Caves of Holy island here;
Porth Trecastell cave is within the rocks on the left hand side of the bay. You cannot reach it form the sand but must take the footpath over the top of the cliffs to the left and drop down the side of the cliff (a scramble) heading back towards the beach.
Porth Aels cave is on the very tip of the Peninsula just north of Aberffraw Bay. You need to go through Aberffraw village and park as close to the beach as possible (you can see the motor racing circuit to the north) and then take the Anglesey coastal path southwards until you reach the tip of the peninsula where there is also a small pebble beach. The cave is there.
Porth Yr Ogof cave is located at the southern western tip of Angelesy jsut below Newborough on Llanddwyn Island. Park on the car park in Newborough forest (well signposted) and follow the public footpath to the island (well signposted). The cave is on the right hand flank of the island and is very difficult to find. Look for a small water inlet - the cave is at sea level within the inlet but can only be see as you approach it and not from any other angle.
No known permission required
Both around 30-40 feet
Porth y Ogof - Unknown
Porth Trecastell cave is above the high tide mark and is unlikely to flood.
Porth Aels cave clearly floods at high tide.
Porth Yr Ogof clearly flood at high tide.
Featureless Sea Caves
(Porth Yr Ogof is unknown)
Porth Trecastell Cave
This is really more of a passage through the rocky left hand walls of the bay. It is fairly narrow and requires a scramble at the end to get out.
Totally featureless and uneventful.
Porth Aels Cave
A small cave that requires a crawl almost immediately and becomes progressively narrower and lower as you travel terminating in a small chamber just big enough to turn around in.
There is a small “passage” to the right of the cave which at first glance does not appear to be a cave. Upon closer inspection you will see that a passage turns immediately right although it becomes too tight within 15 feet and the way is blocked by a rusted car wheel and something “white”.
Porth Yr Ogof
This cave was found whilst the tide was IN (obviously) and it took a lot of finding. In fact, woman found it and I was alking over it (and would have missed it). This cave cannot be accessed except at low tise and even then it may still have sea water in it. Nothing is known of what lies within.
Nothing in these caves is unexplored except Porth Yr Ogof which remains wholly unexplored.
Release the Kraken .....