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Llanfair Slate Caverns

Slate Quarrying Museum

The entry to this old but important slate mine is through the main tunnel, under the twin arches of the crypt and into the lofty cathedral cavern. The tunnels and caverns are all man made and over 100 years old. The slate in this mine, found in veins between layers of Pre- cambrian rocks, is among the oldest in the world, and many industrial towns of Britain and Ireland have the original roofs of Llanfair slate.

Descend Jacobs ladder and wander through the tunnels and chambers, and look for the old drilling holes. There is a likeness of a human face in the mighty number 6 cavern.

As you emerge from the caverns, you face the breath-taking view of Cardigan Bay, from the Preseli mountains in the south to the Lleyn peninsular in the north.

From the entrance you can look down at Shell Island and the Artro Estuary, at low tide the fourteen mile length of St Patrick's causway can be seen.