A well as finished tools, irregular flakes, which were a by-product of local tool processing, are often found at prehistoric sites (10,000 – 5,500 BC). These flakes of grey-coloured flint attest to the use of local flint deposits, such as those from Col dala Pieres. Flint (Ladin: piera da fuech) was also used for lighting fires, which is why it is sometimes called firestone.

This cultural asset is part of the tour "Following the traces of Stone Age hunters and gatherers".

In the Paleolithic and Mesolithic periods (10,000 – 5,500 BC), most tools were made from stone, primarily flint (Silex), which is widespread in the Alps. Tools such as blades, scrapers, burins, awls, and small arrowheads (microliths and trapezoidal points) were created using specific techniques. In addition to more common tools, the Columbella rustica (sea snail) shell was also discovered at Plan de Frea, which is the most important Mesolithic excavation site in the Southern Alpine region. 

Dolostone, or dolomite, or dolomitic rock, is a carbonate rock made up of the mineral dolomite - calcium-magnesium carbonate - that is secondarily derived from limestone. Although dolostones may be found in other places too, only these mountains are called the Dolomites, after the English naturalist who first identified the connection with the mineral dolomite, which a Swiss student, in turn, named after the French geologist Dolomieu.

Ammonites can amaze us with their bizarrely shaped shells, which often came about close to the many great crises they suffered during the long 300-million-year life. Macroscaphites starts off as a normal ammonite rolled up in planispiral shape, then straightening out and ending with a hooklike bend. The planispiral, gas-filled part kept the shell stable in the water, while the organism itself lived in the hooklike section. 

Ammonites sometimes look very similar to each other thanks to their history spanning over 300 million years. They have a planispiral shell more or less marked with ridges and tubercles. Yet they can be classified also on the basis of inner characters, so that there is never a perfect repetition. As a result, this ammonite from the Cretaceous period may always be distinguished from its ancestors.

This large bivalve mollusc ruled the mud flats of the largest Triassic carbonate platform, for good reason called Dolomia Principale (Main Dolomite), stretched throughout the Dolomites and over a good part of the western Tethys. The dolomitization process almost always dissolved its thick shell, leaving only the sediment that filled the shell itself.