This flint flake from the River Bann in Northern Ireland dates from the Mesolithic period between 10,000 and 4,000 years ago. It is a piece of knapped flint that would have originally been mounted in a handle and used as a knife or cutting and scraping implement. It is one of 200 items in the Harris collection from this area of Northern Ireland, which includes flint flakes, fishing net sinkers, and gouges.