Two surface structures discovered in the eastern berm area surrounding the great kiva at the Harlan Great Kiva site indicate two distinct construction episodes. Room 140, represented here by a posthole and other pit features, was built first, and likely had walls constructed of vertical posts, rather than of masonry. Overlying Room 140, and therefore postdating it, are the single-course (one-stone-wide) masonry walls of Room 127.