Living entombed animal

Lore & Background

References to entombed animals have appeared in the writings of William of Newburgh, J. G. Wood, Ambroise Paré, Robert Plot, André Marie Constant Duméril, John Wesley, and others. Even Charles Dickens mentioned the phenomenon in his journal All the Year Round. According to the Fortean Times, about 210 entombed animal cases have been described in Europe, North America, Africa, Australia, and New Zealand since the fifteenth century. In 1771, an experiment was supposedly conducted by the Academy of Sciences at Paris in which three toads were encased in plaster and sealed in a box for 3 years, upon which it was found that two of the toads were still alive.

At times, a number of animals are said to have been encased in the same place. Benjamin Franklin wrote an account of four live toads supposedly found enclosed in quarried limestone. In a letter to Julian Huxley, one Eric G. Mackley claimed to have freed 23 frogs from a single piece of concrete while widening a road in Devonshire. An 1876 report from South Africa said that 63 small toads were found in the middle of a 16-foot-wide (5 m) tree trunk.

During the 1820s, English geologist William Buckland conducted an experiment to see how long a toad could remain alive while encased in stone. He placed toads of different sizes and ages into carved chambers within limestone and sandstone blocks sealed with glass covers, then buried the blocks in his garden. A year later, he dug up the blocks and found that most of the toads were dead and decayed. A few toads that had been in the porous limestone were still living, but the glass had developed cracks which Buckland believed may have admitted small insects. However, Buckland found them all dead after reburying them in the limestone for another year. Buckland concluded that toads could not survive inside rock for extreme lengths of time, and determined that reports of the entombed animal phenomenon were mistaken.

Reader's Guide

The phenomenon of living entombed animals has been dismissed by scientists since the nineteenth century, with most agreeing that reports are mistaken. A writer from the journal Nature wrote in 1910 that the true interpretation is simply that a frog or toad is hopping about while a stone is being broken, and the non-scientific observer immediately concludes it dropped out of the stone. The article notes that no field geologist or collector has ever come upon a live frog or toad imbedded in stone or coal. Some stories may be based on outright fabrications, such as Charles Dawson's Brighton 'Toad in the Hole'—a toad entombed within a flint nodule presented in 1901, likely another forgery by the perpetrator of the Piltdown Man hoax. The toad has since shrunk, suggesting it cannot have been very old at the time of its discovery. Despite the lack of evidence, the phenomenon has persisted in popular culture, appearing in literature by D. H. Lawrence, Dante Gabriel Rossetti, and Victor Hugo, as well as in the Warner Bros. cartoon 'One Froggy Evening'.

Did You Know?

• In 1771, the Academy of Sciences at Paris supposedly conducted an experiment encasing three toads in plaster for 3 years; two were reportedly still alive.
• Benjamin Franklin wrote an account of four live toads supposedly found enclosed in quarried limestone.
• Charles Dawson, likely the perpetrator of the Piltdown Man hoax, presented the Brighton 'Toad in the Hole' in 1901.
• A writer from the journal Nature wrote in 1910 that the phenomenon is likely a misperception of a frog hopping near a broken stone.

A Persistent Myth Across Centuries and Continents

The claim that a living creature can be discovered intact inside solid rock, coal, or wood has captivated observers for centuries. The animals most frequently cited in such accounts are frogs and toads, and the reports span an astonishing geographic range. According to the Fortean Times, roughly two hundred and ten cases have been documented across Europe, North America, Africa, Australia, and New Zealand since the fifteenth century. Early literary references appear in the works of William of Newburgh, Ambroise Paré, Robert Plot, André Marie Constant Duméril, and John Wesley, while Charles Dickens touched on the phenomenon in his periodical All the Year Round. The stories often involve multiple animals at once: Benjamin Franklin described four live toads within quarried limestone, a man named Eric G. Mackley claimed to have freed twenty-three frogs from a single block of concrete during roadwork in Devonshire, and an 1876 South African report described sixty-three small toads recovered from the center of a sixteen-foot-wide tree trunk. One of the earliest controlled claims came in 1771, when the Academy of Sciences at Paris allegedly sealed three toads in plaster inside a box for three years and found two still breathing upon opening it.

Buckland's Garden and the Limits of Survival

The most rigorous early attempt to test the entombed-animal claim came from the English geologist William Buckland in the 1820s. He carved small chambers into blocks of limestone and sandstone, placed toads of varying sizes and ages inside, sealed the openings with glass covers, and buried the entire blocks in his garden. After a year he excavated them and found that the majority of the toads were dead and in a state of decay. A small number housed in the more porous limestone still showed signs of life, but Buckland noticed cracks in the glass that he believed might have allowed tiny insects to enter and sustain them. He then reburied those surviving toads in fresh limestone for another full year, and this time every single one was dead. Buckland concluded that no toad could endure such prolonged entombment in solid rock, and he declared the popular reports to be mistaken. His findings were broadly accepted by the scientific community, and although anecdotal claims continued to surface into the 1980s, serious scientific engagement with the phenomenon largely ceased after the nineteenth century.

No Evidence, No Exceptions

Despite the sheer volume of anecdotal claims stretching back to the medieval period, not a single piece of physical evidence has ever been produced to support the entombed-animal phenomenon, and the idea has been firmly dismissed by researchers such as David Bressan. A 1910 writer in the journal Nature offered what remains one of the most pointed critiques: a frog or toad is simply hopping around while a stone is being broken open, and a non-scientific observer immediately jumps to the conclusion that the creature emerged from inside the rock. The same writer noted that no field geologist, fossil collector, or mineralogist hammering away anywhere in the world has ever uncovered a live amphibian embedded in stone or coal. Some accounts may rest on deliberate fabrication. Charles Dawson, widely suspected of orchestrating the Piltdown Man hoax, presented a "Toad in the Hole" to the Brighton and Hove Natural History and Philosophical Society on 18 April 1901, claiming quarry workers had discovered a toad sealed within a flint nodule north-east of Lewes. The specimen eventually reached the Booth Museum of Natural History in Brighton through Henry Willett, but it has since shrunk, strongly suggesting it was not ancient at the time of its supposed discovery.

From Dickens to Danton: The Toad in Culture

The image of a living creature sealed within stone has proven remarkably durable in literature and popular culture, far outliving any scientific credibility. Charles Dickens wove a reference into his periodical All the Year Round, and D. H. Lawrence invoked the motif in the foreword to his book Studies in Classic American Literature. The Pre-Raphaelite poet Dante Gabriel Rossetti captured the image in his poem "Jenny," describing a "toad within a stone / Seated while time crumbles on." In Victor Hugo's historical novel Ninety-Three, the revolutionary Danton delivers a striking line to Marat, comparing the ancient hatred of Cain to a toad preserved in stone for six thousand years, only to leap forth when the rock is broken. The phenomenon even crossed into animation: in the Warner Bros. Merrie Melodies short "One Froggy Evening," the character Michigan J. Frog is discovered twice inside the cornerstone of a demolished building, a playful nod to the old folklore. The broader cultural resonance of the idea, linking it to concepts like suspended animation and cryopreservation, shows how deeply the notion of life paused within inert matter has embedded itself in the human imagination, regardless of what the evidence actually shows.