A first entry in a spin-off story arc featuring the intrepid Geronimo Stilton places him in the prehistoric village of Old Mouse City, where he works as the editor of the Stone Gazette while he and his cavemouse buddy, Hercule Poirat, dodge meteorites, avoid saber-toothed tigers and outwit ferocious dinosaurs.

"Original title Via le zampe dalla pietra di fuoco!"--Title page verso. Translated from the Italian.