Since 1984 a Swiss Archaeological Mission has been excavating on Tall al-Hamidiya in the Khabur-Region (Northeast Syria).
The main goal of the project was to unearth Taidu, a residential capital of the Mitannian empire, which controlled Upper Mesopotamia between the 17th and 13th centuries BC. The Tall as a potential site of the capital was selected based on written sources and on an archaeological survey. Since 1983 the project has been directed by Prof. Dr. Markus Wäfler, University of Bern. Since 2008 Dr. Oskar Kaelin has been acting as a co-director. The excavation results have been published in five volumes (TH 1-5) and several articles.