Three kilometers south of Persepolis, in the plain of Marv Dasht, lies the prehistoric site of Tall-i-Bakun, consisting of two flat hillocks. Here in 1928, Ernst Herzfeld, of the University of Berlin, decided to undertake a trial excavation of the western mound, where he had previously discovered many prehistoric sherds Iying about on the ground. Later, in 1932, he conducted more extensive excavations, subsequently continued by Erich F. Schmidt (1935–37).

The main deposits of the western hill produced a large quantity of ceramics with unusually beautiful painted patterns dating mostly to the fourth millennium B .C. Unexpectedly, many rooms of the settlement contained a substantial number of unbroken vessels, many of them standing on the floors of the houses, sometimes nested one in another. A great wealth of designs and variations are seen in this cream-colored ware. Many show different geometrical patterns, some simple, some intricate. Fewer have beautifully stylized animal designs depicting either ibexes or mouflons. These vessels manifest a remarkable artistic balance between geometric ornament and animal design. Large jars, usually made in two parts, show distinct markings characteristic of a vessel turned by hand.

Besides these pottery vessels, numerous painted clay figurines of humans and animals were discovered. Other ceramic objects consisted of scrapers, in the form of stirrups, which were used for smoothing and decorating vessel surfaces before the vessels were fired. These scrapers—although made of clay—were so strong, and their scraping edges so sharp, that they were also used for scraping hides. In addition to this vast amount of pottery, there were large quantities of knives, blades, and copper daggers. There were also many button seals, mostly made of green stone, showing beautifully incised designs. Finally, some well-preserved clay labels and seal impressions were excavated.