Best caves around Trevalga are found in the surrounding Cornwall region, offering a diverse range of natural and historical subterranean experiences. This coastal area is known for its rugged cliffs and rich folklore, providing a backdrop for unique geological formations. Visitors can explore sea caves shaped by the Atlantic or delve into former mining caverns that tell tales of industrial heritage. The region's caves are a significant natural feature, attracting those interested in geology, history, and coastal exploration.
Last updated: July 2, 2026
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There's also a small museum and a restaurant/café here. Weather permitting, you can sit outside and admire the view.
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Even at low tide, there is still water in the cave. In some places you can balance along the edge and you may have to take your shoes off. A group played and sang mystical/Celtic music for us. It suited this place perfectly 👍.
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The bridge is new. The circular path and Merlin's cave are great if you like legends
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Wildly romantic! Like in Rosamunde Pilcher films🥰 Small ruin with sea and Arthurian legend
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"Merlin's Face" The carving was completed in February 2016 by local craftsman Peter Graham, who described the work as a "temporary intervention" that would be eroded by the weather. Mr Graham hoped the carving would capture people's imagination and said he had received "overwhelming support" from visitors to the site.
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Great circular walk. Incredibly beautiful panorama. Bridge is brilliant
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How much poorer would European literature be if he didn't exist: MERLIN (according to Wikipedia, the Welsh origin of the name is Myrddin or Merddin) is one of the biggest stars in the sky of mythology. Together with the heroic King Arthur, he has conquered a permanent place in the collective memory of people - at least in the fantasy world of countless authors who have told his story over and over again for centuries, and above all in their ever-fascinating readers or listeners. Daniela has already briefly mentioned in her article the historical connection between this hiking highlight with the beautiful name "Merlin's Cave" and the person of the legendary magician. And the main thing is, of course: the myth lives on!
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The region around Trevalga offers several fascinating caves. Among the most popular is Merlin's Cave, located beneath Tintagel Castle and steeped in Arthurian legend. Other significant sites include Carnglaze Caverns, a former slate mine with an underground lake, and the colourful Holywell Sea Caves, known for their unique mineral-stained rock formations.
Yes, several caves in the area have rich histories. Merlin's Cave at Tintagel is famously linked to Arthurian legend. Carnglaze Caverns offers a glimpse into Cornwall's mining heritage as a former slate mine. Poldark Mine also provides an educational experience into the region's industrial past.
Carnglaze Caverns is an excellent choice for families, offering guided tours deep underground into a former slate mine, complete with an enchanting underground lake. The site also features woodland walks. Merlin's Cave at Tintagel can also be an exciting visit for older children, especially those interested in legends, though access requires checking tide times.
For sea caves like Merlin's Cave, Holywell Sea Caves, and Cathedral Cave, it is crucial to visit at low tide to ensure safe access and egress. Always check local tide times before planning your visit. Inland caverns like Carnglaze Caverns are accessible year-round, maintaining a consistent temperature.
Carnglaze Caverns offers a more structured and accessible experience with guided tours through its former slate mines. For sea caves, access can be challenging, often involving uneven terrain and requiring careful timing with tides. For example, access to Bossiney Cove, which has a cave, is via steep steps and is not suitable for wheelchairs or those with mobility issues.
The caves offer diverse natural beauty. Merlin's Cave is a sea cave formed from slate and volcanic rock. Carnglaze Caverns features an underground lake with crystal clear blue-green water. Holywell Sea Caves are known for their unique multi-coloured rock formations due to mineral-laden water, and Cathedral Cave boasts impressive stalactites and stalagmites.
Yes, the area offers numerous hiking opportunities. You can find easy hikes like the 'Ladies' Window Arch – Rocky Valley loop from Trevalga' or 'St Nectan's Glen & Rocky Valley loop'. For more options, explore the easy hikes around Trevalga guide.
For sea caves, wear sturdy, waterproof footwear that you don't mind getting wet, as there can be standing water even at low tide. Layers of clothing are advisable as temperatures inside caves can be cooler. For inland caverns like Carnglaze, a light jacket is recommended as they maintain a consistent cool temperature of around 10 degrees Celsius.
While direct access for dogs into all caves might be restricted, many coastal paths and natural areas around Trevalga are dog-friendly. For instance, the walks around Tintagel, which offer views of Merlin's Cave, are popular with dog walkers. Always check specific site regulations before visiting.
Parking availability varies by location. For Merlin's Cave and Tintagel Castle, there are paid car parks in Tintagel village. Carnglaze Caverns has its own dedicated parking facilities. For sea caves like Holywell or Piper's Hole, look for nearby beach or village parking, keeping in mind that these can fill up quickly during peak season.
Beyond cave exploration, the Trevalga area is excellent for various outdoor activities. You can enjoy running trails, such as the 'Bossiney Cove – Barras Nose loop', or explore road cycling routes like the 'Port Isaac Harbour – Port Gaverne Cove loop'. For more ideas, check out the running trails and road cycling routes around Trevalga.


Extend your search for the best caves by checking out these guides of the top ones around Trevalga: