For the first time in the world, ERT sheds light on one of the greatest enigmas of antiquity, with a high-quality in-house production, which participated in the Official Programme of the 22nd Thessaloniki International Documentary Festival. ERT journalist Adriana Paraskevopoulou, a member of the excavation team during the period 2018-2019, recorded the excavation carried out on the island by the British School of Archaeology and the University of Cambridge, under the direction of Lord Colin Renfrew and Dr. Michael Boyd in collaboration with the Ephorate of Antiquities of Cyclades and its director, Dimitris Athanasoulis. Lord Colin Renfrew, one of the greatest prehistoric archaeologists of all time, has dedicated his multifaceted work to solving the enigma that has puzzled the global scientific community for decades: hundreds of fragments of broken Cycladic figurines have been found on this small and uninhabited island of the Cyclades, which cannot be joined together. This mystery, which still remains unsolved, has been the focus of Professor Renfrew’s work for many decades, who reveals on ERT's camera that Keros is the first maritime sanctuary on the planet. The documentary presents all the great finds and the complex architectural design on the islet of Daskalio, which testifies to a sophisticated settlement of the Early Bronze Age, which could only be compared to the one in Knossos, Crete during the same period. In the 1950s, Keros was the focus of public attention concerning one of the largest cases of looting in the world. Most of the stolen marble figurines of the Cycladic Civilization ended up in personal collections. Decades later, a rich collection entitled "The Treasure of Keros" was sold, and after many auctions, most of the ancient artifacts of the collection were transferred to the Museum of Cycladic Art.