Thousands of Hands Rebuild a 6‑Metre Pre‑historic Predator in Warsaw

When the clock struck ten on the morning of July 21, the glass‑walled laboratory on the ground floor of Warsaw’s Copernicus Science Centre was suddenly filled with the hum of conversation, the clink of protective goggles and the soft thud of pneumatic chisels. More than two thousand volunteers – teachers, cleaners, tattoo artists and curious parents – had answered a public‑science invitation to take part in something that feels more like an archaeological treasure hunt than a typical museum project.

The object of their careful attention is a Mastodonsaurus, a massive Triassic amphibian that once stalked the riverbanks of what is now southern Poland. The creature measured roughly six metres from snout to tail and weighed in at about 1,300 kilograms – a living bulldozer of its day. Its fossilised bones were uncovered in 2023 by paleontologist Prof. Tomasz Sulej and geologist Dr. Wojciech Pawlak, and have been kept in a massive block of limestone ever since.

Now, under the watchful eye of Sulej and Pawlak, volunteers are painstakingly teasing the bones free, millimetre by millimetre. They work with pneumatic chisels that buzz like tiny saws, and they shine ultraviolet light on the rock to reveal hidden contours. Each shift lasts about two hours, after a brief safety briefing and a quick demonstration of the tools.

There’s a certain charm to the eclectic crowd. One moment you hear a manager from a logistics firm explaining the delicacy of a rib fragment, the next a teenager in a graphic‑t‑shirt jokes about “digging up a dinosaur” even though a Mastodonsaurus is technically an amphibian. Coordinator Tatyana Kozyk jokes that many of them will be “the first human to actually touch these bones.”

Visitors don’t just stand by; a transparent wall lets schoolchildren and passers‑by watch the work unfold in almost real‑time. Parents point and ask questions, while volunteers pause to explain what a particular bone might have looked like when the animal was alive.

The effort isn’t just a one‑off spectacle. The team hopes to have the skeleton fully assembled and on display by late October or early November 2026, when the Copernicus Science Centre will unveil the creature to the public. Until then, the lab will continue to echo with the rhythm of chisels, the occasional laugh, and the quiet satisfaction of thousands of hands bringing a 200‑million‑year‑old animal back to life.