The hammer split rock is a product that results from the processing of large volumes of natural rocks and consists of coarse stones in various irregular shapes (boulders) as they “come out” during their extraction. Then, they are processed using a special tool (hammer) which crushes the volume into smaller pieces. Then, they are processed using a special tool (hammer) which crushes the volume into smaller pieces. Their final processing is done on site by the craftsmen. This type of stone is used for building walls, fencings or stonewalls.