Many archaeological studies, especially those on obsidian artefacts and their origins, have been conducted in the western half of Iran. An exception is the province of Kurdistan as previous studies have mainly taken place in the surrounding provinces. However, the diversity of prehistoric cultures in the surrounding areas increases the importance of studying sites within the province of Kurdistan. In this paper, the results from studies of Late Chalcolithic obsidian artefacts from the site of Tepe Gheshlagh in eastern Kurdistan are reported. Geochemical studies of the obsidian show that they belong to the Nemrut Da˘g and Meydan Da˘g sources located north of Lake Van in eastern Turkey. These obsidians seem to have been exchanged through Mesopotamia by paths that connect the Zagros to Tepe Gheshlagh.
