In Grotta della Basura, a deep cave near Toirano in northern Italy, a team of archaeologists has made a surprising discovery: a number of human hand- and footprints on the clay-rich floor of the cave — evidence that a small and heterogeneous group of Paleolithic people explored the cave 14,000 years ago. In the Grotta della Basura, a preliminary survey of fossil traces is carried out on glossy sheets as a reference for more detailed analyses....
