Map of Neolithic Pottery Exchange Network (image) University of Helsinki Share Print E-Mail Caption This is a map of neolithic pottery exchange network in the Baltic Sea region. Credit Elisabeth Holmqvist-Sipilä Usage Restrictions The image may only be used with appropriate caption and credit. Share Print E-Mail 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.