Archaeological excavations in the western half of Anatolia in the Lake District and the Aegean coast had provided significant findings on how and when the Neolithic lifestyle emerged in these regions. However, until the beginning of archaeological excavations at Eksi Hoyak, our knowledge about the Neolithisation of the Upper Menderes Basin, which lies between these two regions, was limited to the Neolithic settlements identified during surface surveys. With the start of excavations at Eksi Hoyak, one of the oldest known settlements in Western Anatolia, it became clear how and when the Neolithic lifestyle emerged in the region. The excavations at Eksi Hoyak have also provided detailed information on the diet, raw material use, division of labour and specialisation of Neolithic communities in the Upper Menderes Basin. This paper presents the results of these excavations between 2015 and 2020. A combination of locus and code systems was adopted to record fieldwork, and vector drawing software was used for digitising finds and architectural remains. The distribution of finds and analyses of site use was carried out using GIS software. The ceramics' internal and external surface colours were measured with spectrocolorimetry equipment, and the additives were determined by macroscopic observations. Chipped stone finds were analysed typologically, and macroscopic observations were used to identify obsidian sources. Animal remains are presented statistically by species and age. The demographic distribution of the human remains and the identified diseases are presented.

Eksi Hoeytik Archaeological Excavation Project is conducted with financial support from the General Directorate of Cultural Heritage and Museums of the Ministry of Culture and Tourism of the Republic of Turkey, Municipality of Cal, Ege University, and Turkish Historical Society. We hereby thank all institutions for the opportunities that they provided. We also want to thank Esref Abay, the site director of Beycesultan Hoeytik, for always remaining by our side as a member of the project team to commence and conduct this project from the first day of the excavation. We also express our gratitude to Birgtil Camoglu and othercolleagues working at Denizli Museum and, most notably, to Hasan Hueseyin Baysal, the Director of Denizli Museum, who made the most significant contribution in commencing the excavation at Eksi Hoeyuek. The studies of chipped stones were kindly helped by the projects based at the former OREA Institute of the Austrian Academy of Sciences and Koc University in Istanbul, and we wish to thank them for their financial support. We hereby thank all our colleagues, students and personnel who carried out this project together with us.

General Directorate of Cultural Heritage and Museums of the Ministry of Culture and Tourism of the Republic of Turkey; Municipality of Cal; Ege University; Turkish Historical Society