Along the convenient path that leads to the summit of Monte Generoso, it is interesting to observe several geological curiosities on the left side.
At the start of the path there is an outcrop of rock from which some blocks were recently extracted for the construction of walls.
The rock in this spot is made up of strata around 15 cm thick that was formed over 750 million years, bounded by thin clayey levels. The darker strata are thin strips of flint. On the floor of the footpath, it is possible to observe numerous trace fossils, left by animals like the present hooved ones that crawled along the sands of the marine floor.