Iron Age Arrow (IMAGE) University of Cambridge Caption Iron Age arrow from Trollsteinhøe used to study the relationship between climate variability and how humans used alpine landscapes in the past. Credit James H. Barrett Usage Restrictions pls credit License Licensed 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.