The Ri??ukalns Site (IMAGE) Cell Press Caption This image shows the Ri??ukalns site, a Stone Age shell midden on the banks of the Salaca River near the outflow from Lake Burtniek. Credit Harald Lübke, ZBSA, Schloss Gottorf Usage Restrictions Credit Required 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.