There’s a Mysterious Stone In London That Nobody Can Explain | Unexplained

Ancient Civilizations

There’s a Mysterious Stone In London That Nobody Can Explain

In the heart of London, amidst the hustle and bustle of Cannon Street, lies a peculiar artifact known as London Stone. This seemingly ordinary rock has a history steeped in mystery and significance, yet few people stop…

March 10, 2025 • 3 min read • Art Grindstone

Art Grindstone is the hard-nosed storyteller behind Unexplained.co, a veteran investigator whose life’s work sits at the crossroads of the paranormal, fringe science, and the shadows most people try not to look into. With decades spent chasing impossible stories — black-budget psychic programs, vanished Cold War experiments, desert rituals that sparked UFO waves, and the strange phenomena buried in America’s forgotten backroads — Art brings a rare combination of skepticism, awe, and journalistic precision. He’s not here to debunk. He’s not here to blindly believe. He follows the evidence wherever it leads — even when it leads someplace deeply uncomfortable. Known for his immersive, cinematic style and his ability to turn obscure research into gripping narrative, Art has built a devoted following across podcasts, long-form features, documentaries, and serialized investigations. His interviews are direct. His analysis is unflinching. His voice has become a staple in the modern paranormal renaissance — the guy people turn to when a story is too strange, too complex, or too dangerous for anyone else to touch. Off-mic, Art works with a distributed network of researchers, archivists, and field operatives who help surface the stories mainstream media ignores. On-mic, he transforms their findings into meticulous, high-impact reporting that refuses to insult the intelligence of true believers. His philosophy is simple: Take the phenomenon seriously. Treat the audience with respect. Tell the story as if the world depends on it — because sometimes it does. When Art Grindstone digs into a case, he isn’t just chasing a mystery. He’s tracing the fault lines of reality itself.

In This Report(8)

In the heart of London, amidst the hustle and bustle of Cannon Street, lies a peculiar artifact known as London Stone. This seemingly ordinary rock has a history steeped in mystery and significance, yet few people stop to ponder its existence as they rush by.

Key Takeaways

London Stone’s original purpose remains unknown.
It has survived significant historical events, including the Great Fire of London and WWII.
The stone is believed to have mystical properties linked to the prosperity of London.

The Enigmatic London Stone

Every day, thousands of commuters pass through Cannon Street, the financial hub of London. Among the towering glass buildings, one might notice a small enclosure housing a rather unimpressive lump of rock. This is London Stone, a relic that has puzzled historians and locals alike for centuries.

The stone is marked with the words “London Stone,” and a plaque nearby attempts to explain its significance. It states that the stone was once located in the middle of Cannon Street and may have Roman origins. Despite its historical importance, the plaque admits that its original purpose is unknown, leaving many questions unanswered.

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A Brief History

12th Century: The stone was already referred to as London Stone.
1450: Jack Cade, a rebel leader, struck the stone with his sword, claiming to be the Lord of London.
1742: The stone was relocated to the north side of the street and later incorporated into St. Swithin’s Church.
1961: After the church was bombed during WWII, the stone was moved to a new office building.

The Stone’s Mystical Reputation

Despite its mundane appearance, London Stone has been the subject of numerous legends and folklore. Some believe it to be the stone from which King Arthur pulled Excalibur, while others think it is part of an ancient network of ley lines connecting it to other historic sites like Stonehenge.

One of the most enduring tales is that if London Stone were to fall, so too would London itself. This belief has led to the stone being treated with reverence throughout history. During the Middle Ages, an iron cage was placed over it to prevent theft, and it was carefully relocated whenever necessary.

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The Stone’s Material and Size