This is the first volume detailing the excavation of the Cave of the Cyclops on the island of Youra in the North Aegean. The cave was occupied at various times from the Mesolithic through Roman periods. The setting and stratigraphy of the cave and a survey of the area are discussed. The Mesolithic and Neolithic ceramic, lithic, and small finds are organized into catalogs. Additionally, this volume provides insight into the means of survival and the flowering of culture on Youra during the Mesolithic and Neolithic periods, and it presents the connections between this outlying area and mainland Greece.