Short preliminary notices of the work at Çayboyu have appeared in recent issues of this journal and the METU series of preliminary reports (Diamant 1971, 1972; Diamant & Aksoy 1972, 1973). No further excavation has taken place since the initial two short seasons (1970–1). What follows is thus only a slightly more detailed summary of the material recovered up to this time.

The mound of Çayboyu lies about one kilometre east of Aşvan village, on the edge of a small wadi. It is barely visible on the northwest side as one approaches from the village, since the change in elevation is very gradual. However, on the southeastern side the wadi and subsidiary irrigation channels have eroded away what may be as much as half of the original mound, leaving an exposed cross-section of it about three metres high. One of the modern irrigation channels runs periodically just at the base of this scarp, from which pottery and obsidian artifacts have been collected.