1. Introduction The first study season of the Sissi ground stone assemblage commenced in June 2011 and focused mainly on material recovered during the 2010 excavation campaign, but also on a small number of objects recovered during the 2011 campaign. In total, 276 objects were studied, 73 of which exhibit no manufacturing or use wear and thus have not been included in the following analysis. The remaining 203 objects were recorded in detail in terms of technological characteristics and wear p..