There seems to be another stone to the untrained eye. - But in this part there are many stone tools and can be picked up far enough anywhere, where there have been some excavations done. This is acknowledged by the fact that the left side, in the picture, has several pieces removed to produce a sharp edge. The right side, in the picture, is still untouched with naturally rounded corners and edges. This type of stone artefact was produced from several million years ago until about 100 000 years ago, so it can be produced anytime during that period.
