Discover a magical underground lake
Venture deep underground to explore three spectacular slate caverns, including a flooded cavern with striking blue-green water. It's a unique subterranean adventure that brings Cornwall's mining heritage to life.
Fancy an underground adventure with the kids? Explore Carnglaze Caverns in Cornwall, where historic slate mines lead to spectacular underground chambers and a crystal-clear subterranean lake. Then head into the woodland to discover enchanting fairy features and enjoy a family walk. It's a wonderfully unusual day out, whatever the weather!
Venture deep underground to explore three spectacular slate caverns, including a flooded cavern with striking blue-green water. It's a unique subterranean adventure that brings Cornwall's mining heritage to life.
Head outdoors to explore ancient oak woodland, discover whimsical fairy features and enjoy a family walk filled with little details for curious young explorers to find.
Put on a safety helmet and explore a historic underground slate mine, learning how miners shaped the caverns more than 300 years ago. An unusual way for families to discover the region's industrial heritage.
Carnglaze Caverns is generally open Wednesday to Sunday and on bank holidays during the quieter season, with daily opening during busier holiday periods.
Low season: Wednesday–Sunday, 10am–5pm.
High season and holiday periods: Typically 10am–5pm, seven days a week.
Last entry is usually 4pm, although opening times and availability can vary. Advance online booking is recommended, particularly during busy periods, as visitor numbers underground are limited.
Carnglaze Caverns
St Neot, Liskeard, Cornwall, PL14 6HQ, England
Please follow signs rather than SatNav to postcode
Tel: 01579 320251
This attraction has been claimed and verified. All information has been recently checked.
Last updated: 09:14 15/10/2026