[1] S.S. Koursoumis, D. Kosmopoulos, The boundary line between Messenia and Laconia along the ridge of Mount Taygetos. First of all we would like to thank our colleagues and partners Vassilis Georgiadis and Fotis Stavrianopoulos, the 38 th and 5 th Ephorates of Prehistoric and Classical Antiquities of Messenia and Laconia for permission to publish, the archaeologists Dr. Mercourios Georgiades and Mrs Gelly Fragou for helping us in the translation of this paper, and Professor Yianis Pikoulas for his advice and contribution in our 2010 survey. Finally our gratitude goes to Professor Bill Cavanagh, Head of the Department of Archaeology and Director of the Centre for Spartan and Peloponnesian Studies, for giving us the opportunity to present our research in this conference. This presentation is dedicated in memory of Walter Kolbe and Nicolaos Yiannoukopoulos, research pioneers and guides in our ambitious attempt.