Take a Virtual Tour of Georgian Lord Acton’s Secret Cornish Beach Cave Bath
A hidden Cornish bathing chamber, a bruised scramble, and a second life in 3D
Just below Acton Castle near Marazion, carved into the cliff at Stackhouse Cove, is a secret that most people, even locals, have never seen.
In 2019, I discovered it for myself. I say “discovered”, the truth is I’d spent many happy days on this beach as a boy with one of my best school friends, completely unaware of what lay just metres away, tucked into the rockface. Decades later, I returned with my Matterport scanner, a backpack, and a bit of curiosity.
What I didn’t expect was how difficult the access had become. The path to the cave has long since eroded. The scramble up the cliff left me with a ripped shirt, a few decent cuts and bruises, and a very real appreciation for the lengths the original builders must have gone to. But it was worth it.
What I found, and scanned, is a rare, hand-carved Georgian bathing chamber, dating back to the late 18th century. Built by John Stackhouse FRS, a pioneering marine botanist who commissioned nearby Acton Castle, the chamber was intended for freshwater bathing. It’s just large enough to stand and change clothes, and features a purpose-cut stone basin that still slowly fills via a natural spring trickling from the ceiling.
Stackhouse was fascinated by seaweed, and constructed both a freshwater bath (this one) and a saltwater tidal pool below for health and study. His wife, Susannah Acton, is believed to have used the chamber for modest, therapeutic bathing, a sort of private Georgian spa long before such things became fashionable.
There’s even a link to smuggling folklore. John Carter, the infamous smuggling “King of Prussia” and one-time caretaker of Acton Castle, may have helped excavate or maintain the chamber, adding to its mystery.
Light levels inside were far lower than I’d anticipated, and I hadn’t brought enough lighting kit. Accordingly, the scan is dark in places, but faithful. This is not a cleaned-up exhibition, it’s the real thing: rough-cut, weathered by time, and beautifully hidden.
The chamber is no longer safe or accessible to most people, and perhaps that’s for the best. But now, at least, you can explore it virtually and imagine what it once offered; seclusion, salt air, and the quiet luxury of cold spring water in a stone-cut Cornish spring-water bath.
👉 Take the virtual tour here: https://ocean3d.co.uk/take-a-virtual-tour-of-georgian-lord-actions-beach-cave-bath/
Further reading:
1. “Seaweed, Smugglers & Spa Pools” – Beachcombing Magazine (March 8, 2023)
“In the depths of Cornwall… a secret 18th‑century Georgian bathroom hidden deep in the Cornish Cliffs.” Includes details on John Stackhouse, Susannah Acton, and smuggler John Carter
2. “The Stackhouse Baths” – A Cornish Journey (Sept 3, 2020)
Local historian guide with site history, pathways, Salt- & Fresh‑water baths, plus context
🔗 https://acornishjourney.uk/2020/09/03/time-for-a-bath-or-two/
3. “The Stackhouse Baths” – Explore Cornwall (date unspecified)
Describes the cave bath and attributes its excavation to smuggler John Carter
🔗 https://explorecornwall.uk/attractions/the-stackhouse-baths/
4. “Cold water baths at Stackhouse Cove” – iWalk Cornwall
Highlights the dual rock‑cut baths and spring‑fed freshwater pool
🔗 https://www.iwalkcornwall.co.uk/pi/stackhouse_baths
5. TikTok Video Mention (~10 months ago)
A popular short video pointing visitors into the dripping “natural bath tap… left on for two centuries”
🔗 https://www.tiktok.com/@renata.gypsy69/video/7413818147314076960