Royston Cave
Royston, Hertfordshire
In 1742 workmen digging under a market crossroads found a hidden chamber cut into the chalk. Shaped like a bell, its walls are covered in carvings of saints, crucifixions, knights and strange figures, probably from the Middle Ages.
Read the full story, see it on the map, get directions and find what else is nearby in the free Hidden Britain Atlas map.
- When
- Found 1742
- Where
- 52.0484, -0.0244
- Group
- Unexplained
Visiting
Open on weekend afternoons in summer.

The Ledger of Lost Artifacts and Civilizations
Not every mystery needs a lost continent. This book investigates fifty-nine real and often overlooked puzzles from the ancient and modern world: a temple older than farming itself, astonishing structures, out-of-place artifacts, and technologies lost to time. Each case is weighed honestly, with a clear ledger of the case for and against, so you can make up your own mind. Some cases collapse under scrutiny. Others remain genuinely unexplained. All of them are stranger than Atlantis.
Nearby mysteries
- The Ickleton MandelbrotCrop circle · Ickleton, Cambridgeshire · 9 miles away
- Jack o' LegsHill figure · Weston, Hertfordshire · 9 miles away
- The Home Counties Police SightingsUFO case · Arkesden, Essex · 9 miles away
- Jane Wenham, the Wise Woman of WalkernWitches · Walkern, Hertfordshire · 10 miles away
- The Saffron Walden CockatriceDragon or monster · Saffron Walden, Essex · 11 miles away
- The Lost Giants of WandleburyHill figure · Gog Magog Hills, Cambridgeshire · 12 miles away