wild barley was found at every layer at chogha golan, starting with "archaeological horizon xi". before the appearance of domesticated emmer wheat, wild barley was the predominate cereal crop found at chogha golan, while wheat was rarely found. after around 2000 years, domesticated emmer first appears at "archaeological horizon ii" and is also found in "archaeological horizon i". after the initial appearance of domesticated emmer wheat, emmer wheat became the predominate cereal grain found at the site.