Rocks have been found to hold many traces of Earth's ancient history, but usually geologists have to seek them out. Every once in a while, however, these imprints of times past are found by unsuspecting visitors. This occurred in 2019, when a group of free climbers exploring the slopes of Monte Conero in Italy came across a large slab of rock covered in imprints reminiscent of a herd of running animals. One of the climbers ended up showing photos of the imprints to a geologist, which resulted in a study of the area. That study is now published in the journal Cretaceous Research.