Large handheld flakes (IMAGE) Kent State University Caption The large handheld flakes knapped by Metin Eren. (Images credit: Metin I Eren). Credit Metin I. Eren Usage Restrictions Request permission from Metin I. Eren License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.