Muge 150th: The 150th Anniversary of the Discovery of Mesolithic Shellmiddens is organized into two volumes. This first volume focuses on the Mesolithic structures of the Muge and Sado Valleys, with a total of 27 chapters. These contributions cover a wide range of archaeological and anthropological themes, including a general synthesis on the current state of specific topics including the use of isotopes in diet determination and migration; settlement and subsistence; technology; plant use; burial practices; social complexity; and research history.