Merlin's Cave

Merlin's Cave in Tintagel is a natural sea tunnel running right through the rock of Tintagel Island in Cornwall, joining Tintagel Haven beach on the east side to West Cove on the west. When the tide is out you can walk from one end to the other across a sandy floor; when it is in, the sea fills the passage completely. It sits directly below the ruins of Tintagel Castle and is one of the most memorable spots on the Cornish coast.

What is Merlin's Cave?

The tunnel cuts through the headland for roughly 100 metres, carved by waves over thousands of years. Inside it is dark, damp and echoing, so a phone torch helps. Near one entrance a carved face of a sleeping Merlin watches over the rock, made by sculptor Peter Graham for English Heritage and finished in early 2016.

Why is it named after Merlin?

The link is legend. In the tale, Merlin carried the newborn Arthur through the cave to keep him safe. The name itself is more recent than the story suggests: English Heritage says it only took hold in the late 19th century, inspired by Tennyson's poetry. Tintagel has been tied to Arthur's birth since the Middle Ages, which is why Arthurian fans come here.

How do you get there?

The cave opens onto Tintagel Haven, below the castle that English Heritage looks after. You reach the beach by steep steps and a cliff path, which some visitors find demanding. Going down from the castle area takes a few minutes, and the climb back takes longer. The beach and cave are free to visit; only the castle itself needs a ticket.

When should you visit?

Only at low tide. As the water rises the beach almost vanishes and the cave floods. Check a current tide table for Tintagel before you set out, and aim for low water or a falling tide. English Heritage advises checking tide times before booking castle tickets. Enter with plenty of time in hand and leave before the sea turns.

Is it safe?

There are no lifeguards on the beach. The cove faces Atlantic swell, with strong waves, surges and currents near the cave mouth and rocks, so swimming is not an option. Wear shoes with good grip, because the rocks and tunnel floor are wet and slippery. Being cut off by the rising tide is the main risk, so watch the clock.

What else is nearby?

Above the cave stand the castle remains on Tintagel Island, and the South West Coast Path runs along the cliffs. Tintagel village is within walking distance, with cafes, shops and parking.

Frequently asked questions

Can you enter Merlin's Cave at any time? No. It is only accessible at low tide. At high tide the tunnel is completely flooded.

Does it cost anything to visit? No, the beach and the cave are free. You only pay for entry to Tintagel Castle.

How long should I allow? Walking through takes a few minutes. With the descent, time on the beach and the climb back, allow about an hour.

Can you swim there or is there a lifeguard? No lifeguards are on duty, and strong waves and currents around the rocks make swimming dangerous.