SU 2373 is a wall/ wall foundation in Space 1A-6, composed of irregular tuff, basalt, and travertine. The wall foundation stands at a slightly different alignment than the later Phase 2 walls (namely 2233) and suggests that there might have been one or more rooms facing south in Phase 1A. Unfortunately, the remains are highly fragmentary, and no excavation took place in the area beneath the level of these wall foundations.