Irregular flint flakes

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.