The Pool of Death: The Spring a Thousand Hamburg Toads Burst From Within

2026-07-10 · Mysterious Creatures · 9 min read

It began, the residents said, in the small hours. Somewhere between two and three in the morning, when the pond in Hamburg's Altona district lay black and still, there would be a wet, muffled report, like a fist driven into wet clay. Then another. By daylight the banks of the little water were littered with the bodies, and the bodies were not merely dead. They were turned inside out. Toads that should have fit in a child's palm had swelled to three and a half times their normal size, split along the belly, and thrown their livers, lungs and coils of intestine as far as a metre away across the grass and the shallows. Over a handful of nights in the spring of 2005, more than a thousand toads died this way. The locals gave the place a name that needed no translation: der Tümpel des Todes, the Pool of Death.

The pond sat in a district called Altona, a green pocket of a very ordinary German city, the kind of place where people walk dogs and children feed ducks. It was breeding season, when common toads gather at the water in their hundreds to mate, so the density of animals was high and the spectacle, when it came, was correspondingly grotesque. Newspapers around the world picked up the story within days. Photographers came. Amphibian experts came. And nobody, at first, could say what was killing them. The animals did not appear to be poisoned in any ordinary sense. They did not seem to be dying of a plague that left a corpse behind. They were, witnesses insisted, inflating themselves and then coming apart, sometimes while still alive, as though some pressure inside them had nowhere left to go.

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