Best caves in Cornwall AONB are geological wonders, shaped by the Atlantic Ocean and historical human activity. This region features a diverse landscape, from dramatic coastlines to ancient mining areas. Visitors can explore sea caves, collapsed caverns, and former slate quarries. The area's rich history and natural beauty make it a compelling destination for outdoor exploration.
Last updated: May 9, 2026
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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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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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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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Lovely walk, lots of interesting and varied scenery. We did it on a good November day and some short sections inland were very muddy
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Cornwall AONB offers a diverse range of caves, including dramatic sea caves carved by the Atlantic, collapsed caverns like The Devil's Frying Pan, and ancient mining quarries such as Carnglaze Caverns. You'll find mythical sites, visually striking natural formations, and even caves with historical carvings.
Yes, several caves are steeped in local folklore and history. Tintagel Castle and Merlin's Cave is famously associated with Arthurian legends, where Merlin is said to have frequented. Piper's Hole at Crantock Beach features an enigmatic carving and poem, while Holywell Sea Caves (St. Cuthbert's Cave) has tales of healing powers from its natural spring.
For families, Porthgwarra Beach offers interesting rock pools and caves to explore at low tide. Trevone Bay also has plenty of rocks and caves for children to discover, alongside a gently sloping beach. Carnglaze Caverns provides an accessible and educational experience exploring former slate quarries.
The Holywell Sea Caves (St. Cuthbert's Cave) at Holywell Bay are renowned for their multi-colored rock face with veins of red, white, yellow, blue, and green. The Cave of Many Colours at Cape Cornwall also boasts a fantastic array of vibrant hues from metal minerals. Song of the Sea Cave (Zawn Pyg) at Nanjizal Beach is known for its ethereal glow as sunlight interacts with its two clear water pools.
Many of Cornwall's sea caves, including Merlin's Cave, Piper's Hole, and Holywell Sea Caves, are only accessible at low tide. It's crucial to check local tide times before planning your visit to ensure safe exploration. The summer months generally offer more predictable weather for coastal visits.
Carnglaze Caverns near St Neot provides a unique insight into Cornwall's rich mining past. These three cathedral-like caves were once a slate quarry, hollowed out by miners centuries ago. You can go 150 meters into the hillside and 60 meters underground, witnessing the impressive scale of human endeavor.
You can observe various natural phenomena, from the powerful coastal erosion evident at Funnel Hole, a dramatic collapsed cave, to the unique mineral formations and multi-colored rock faces in places like Holywell Sea Caves and the Cave of Many Colours. Carnglaze Caverns features an underground lake and geological formations like stalactites and stalagmites.
The area around Cornwall AONB's caves offers numerous outdoor activities. You can find excellent cycling routes, such as 'The Penrose Estate and Loe Pool loop' or 'The Camel Trail', which you can explore further in the Cycling in Cornwall AONB guide. For mountain biking, consider routes like 'The Lizard Peninsula loop' detailed in the MTB Trails in Cornwall AONB guide. Many caves are also located along the Southwest Coast Path, offering scenic walks.
Yes, The Great Cave at Land's End is described as 'absolutely gigantic' and completely undetectable from above, making it a thrilling discovery for those who seek out hidden wonders. Many sea caves are also only revealed at low tide, adding to their elusive nature.
When visiting sea caves, always be mindful of the tides. Many are only accessible at low tide, and it's crucial to check tide times to avoid being cut off by the incoming water. Some sea caves are best explored with guided coasteering trips for safety, especially those in dynamic coastal areas.
Visitors frequently appreciate the dramatic coastal scenery and the unique geological formations. The historical and mythical connections, especially at Tintagel Castle and Merlin's Cave, are a major draw. The opportunity to explore hidden coves and the visual spectacle of caves like Holywell Sea Caves with their vibrant colors are also highly valued.

