There is a four-kilometer instructive path that leads through Devínska Kobyla, with one significant area called Sandberg. This is one of the most important palaeontological localities in Slovakia. The yellow faces of the old sandpit has remnants of rocks of the tertiary sea with horizontally deposited layers, and there are still fossils of sea fauna to be found there. The age of these rocks is estimated to be between 14 and 16 million years old.