Some Archaeological Finds

My friend found several Neolithic flint scarpers at the beach ... I have to admit that I am quite blind when it comes to this stone stuff... And I got a headache after c. 20 minutes scrutinizing the gravel. ;))
These Stone Age tools come from a Neolithic settlement that was flooded already in ancient times. Now the tide washes up these artefacts; usually stone objects like these ones but also nicer ones.