The scenery of the coast north of Caim is beautiful. Moreover, excellent coral fossils can be observed in situ and found as wave-rounded pebbles here. Brachiopods are also abundant.
♦ Parking can be found at or near to Caim, which is at the most eastern tip of Anglesey.
♦ When you reach Caim you will find a small electricity sub station on a minor road leading to a dead end at Pentir cottage (marked on map).
♦ Walk to the gate next to Pentir cottage.
♦ When in the field take a line at about 45 degrees from the wall and fence so that you are heading into the middle of the field at and angle.
♦ Once over the rise in the middle of the field you will see two ‘spits’ of land ahead of you. Both access points are on the left side of the spits. A on the left spit B on the right spit.
♦ Ref: SH 62252 81520
FIND FREQUENCY: ♦♦♦♦ – Certain strata are packed with coral fossils which have been weathered proud of their matrix and stand in relief from the rock. Coral fossils can also be found loose among the pebbles of the beach. Brachiopods can be observed in situ in a limestone outcrop at the top of the cliff and also as worn sections at beach level.
CHILDREN: ♦♦♦ – The beach is covered by large boulders in places and the headlands are steep. The footpath down can be difficult and because of this, we do not recommend for children.
ACCESS: ♦♦ – There is a 500m walk from Caim to the beach. Once on the beach some climbing over boulders and ledges may be required. Caim is quite hard to find and parking can also be difficult.
TYPE: – Fossils are found both in situ in rock ledges and also loose as wave-rounded pebbles.
One of the best places to look for fossils along this stretch of coast is on top of the headland that you come to at the end of the walk from Caim. Within minutes of investigating the rock here you should have found a number of excellently preserved coral specimens standing proud of their matrix. Please do not try to remove these, leave them for others to find also.
A little lower down there is a layer of rock that is almost entirely composed of coral fossils. This can be seen well at the base of next headland to the west.
The pebbles and cobbles that make up the beach also contain fossils. Brachiopod sections and pretty corals are frequently found. With some searching you should be able to collect quite a few of these.
At the top of the cliff next to the path there is a limestone outcrop; large brachiopods can be observed in its exposed strata. Please do not attempt to extract these.
Fossils can be found for a few hundred metres to the east and a couple of kilometres to the west along this stretch of coast, but the most impressive – the corals – are found just at the end of the path down to the beach.
The Carboniferous Limestone Series at Caim is of Visean age. It is part of the Clwyd Limestone Group, This is around 330 million years old. This is a diverse range of limestone facies with subordinate sandstone and mudstone units, and exhibiting local dolomitisation. Records the initiation and growth of a carbonate platform along the northern flank of the Wales-Brabant Massif.
As this is a remote location it is best to visit in pairs or as a group. A mobile phone should be taken and someone should be told where you are going and when you expect to be back. Make sure you visit on a retreating tide and take care when climbing ledges or boulders.
You should bring a decent rucksack in which to store your finds. Packing material and bags should also be brought. This is a remote location – you should take enough to drink with you and also a mobile phone. A camera will come in handy for photographing the corals.
This site is an SSSI. This Special Site of Scientific Interest, means you can visit the site, but hammering the bedrock is not permitted.