A slow walk of 200 million years long To leave those traces were the creatures That lived in Earth for the longest time The great reptiles that, in past's shadow have invented social and parental links. Dinosaurs, in the end, become extinct But they did not disappear at all Their fossil remains, results of bizarre Physical-Chemical processes are a statement of an extraordinary existence that made them unconditioned protagonists of the whole animal world for tens million years In Italy, due to particular geological conditions no one has ever found a clear and relevant traces of their ancient presence But now a great discovery: into Rovereto's mountains, in the province of Trento, within rocks and marbles already describes by Dante in his "Divina Commedia", many dinosaurs have grazed and hunt, so these mythological creatures finally can join Italy's history. At now, 130 traces were found, belong to about 30 creatures, of two and four footed animals, of 1/2 tons weight and herbivorous. They were all migrating from south to north in about one week. Other traces will be found by the diggings programmed by Natural Science Museum of Trento and Rovereto.