Neolithic B (PPNB) and Yarmoukian periods. The site is one of the PPNB 'megasites', and the only excavated site north of the Zarqa River. Two substantial buildings were uncovered. One is a large, so-far-unique, squared/rectangular structure with parallel interior walls and three types of stratified plastered floors (red, yellow, and white), recalling the 'grille buildings' at the early Neolithic site of Çayönü, in eastern Anatolia. The other structure, located on the west side of the site, is a small room with mud floors defined by three stone walls.