Best caves around St Gennys are predominantly sea caves formed by Atlantic erosion along the dramatic North Cornwall coastline. While St Gennys itself does not feature widely recognized named cave systems, the area's geology contributes to numerous littoral caves and hidden coves. The broader region, including nearby Tintagel, offers notable cave attractions. This coastal stretch is known for its rugged landscape and historical associations with smuggling routes.
Last updated: August 25, 2026
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At low tide, Jannik can visit the cave where the wizard Merlin allegedly worked.
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Allegedly, according to legend, the wizard Merlin lived here
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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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"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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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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You can go through the cave once at low tide and come out on the other side, but not with dry feet, and only in the "deep" stage at low tide. Very interesting and a bit scary, but a lot of fun.
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The cave is open from both sides. If you go inside you can be lucky that the light reflects beautifully in the water. Depending on the water level, you can also climb here.
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Note the slippery rocks.
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The coastline around St Gennys is characterized by dramatic cliffs and secluded coves, where you can find natural sea caves formed by millennia of Atlantic swells. These littoral caves are typically carved into the cliff face through erosion and are often accessible only under calm sea conditions and at low tide.
While St Gennys itself is known for its natural, undeveloped sea caves, the broader North Cornwall region features more widely recognized caves. One notable example is Merlin's Cave, located beneath Tintagel Castle. This cave is famous for its Arthurian legends and can be explored at low tide.
Yes, Merlin's Cave is accessible at low tide. You can reach it for free by descending a small path just before the Tintagel Castle ticket office. It's important to check tide times carefully before entering. Legend has it that Merlin carried the baby King Arthur through this cave to safety.
Yes, Bossiney Cove is a beautiful hidden gem that features a small sandy beach and caves, but it is only accessible at low tide. The access involves a footpath over farmland and then steep steps, making it unsuitable for wheelchairs or those with mobility issues.
For exploring the natural sea caves along the St Gennys coastline, the best time to visit is during calm sea conditions and, crucially, at low tide. Always check local tide tables before planning your visit to ensure safe access and exit.
The rugged coastline around St Gennys has historical associations with smuggling routes, where hidden coastal features and coves might have been used in the past. Further afield, Tintagel Castle, linked to Arthurian legends, features Merlin's Cave, adding a rich historical and mythical dimension to your visit.
Beyond cave exploration, the St Gennys area offers a variety of outdoor activities. You can find numerous family-friendly hikes, including easy routes like the 'View of Cambeak Headland – Crackington Haven Beach loop'. There are also MTB trails and running trails to explore the stunning coastal and inland landscapes.
While the natural sea caves directly in St Gennys require careful timing and conditions, the accessible parts of Merlin's Cave at Tintagel can be a fascinating experience for families, especially when combined with a visit to Tintagel Castle. Always prioritize safety and check tide times.
The St Gennys coastline is shaped by dramatic cliffs primarily composed of black shale, quartz, and sandstone. This geological makeup, combined with weaknesses like faults and fractures, allows for the formation of sea caves through relentless wave erosion. The area also boasts High Cliff, the tallest cliff along Cornwall's coastline.
Specific guided cave tours for the natural sea caves directly in St Gennys are not widely advertised, as these are undeveloped littoral caves. Exploration often requires local knowledge and an understanding of tidal and sea conditions. However, the area is popular for activities like coasteering and sea kayaking, which can offer opportunities to explore these coastal features with experienced guides.
When exploring coastal caves, especially those accessible at low tide, it's advisable to wear sturdy, non-slip footwear that can get wet. A torch or headlamp is essential for visibility inside darker sections. Always check tide times and weather forecasts, and consider bringing a waterproof bag for personal items. For undeveloped sea caves, local knowledge or a guided activity is recommended.


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