Volunteers armed with chisels, brushes and protective goggles chip away at rock encasing the bones of a massive prehistoric amphibian in a glass-walled laboratory on the ground floor of Warsaw’s Copernicus Science Centre.
On the other side of the wall, visitors watch the work unfold on the bones of the nearly six-meter (20-foot)-long skeleton. Children point with excitement while parents contemplate the creature the massive bones once belonged to.
