The Nahal Avnon area was first surveyed in 2011 as part of a preliminary survey prior to the laying of the Dimona–Yeroham railroad (Shmueli, Aladjem and Radashkovsky 2012). In the survey, 18 sites with archaeological remains were identified along Nahal Avnon, mainly farming terraces, structures and walls. In May 2020, a trial excavation was conducted about 600 m east of the present excavation, revealing segments of field walls that apparently enclosed a farming plot near Nahal Avnon, as well as a concentration of large stones (Davis 2021).
Two areas, northern and southern, were opened in the present excavation, on a plain near the southern bank of Nahal Avnon. Two walls and a heap of stones were found in a poor state of preservation due to modern activity.
In the northern area, two walls (W106, W109; Figs. 2, 3) were built on a bedding of pebbles. Wall 109 (width 1.4 m), the larger of the two, is oriented in a general east–west direction, along the course of the stream. The wall was constructed of two rows of medium-size fieldstones, with a core of smaller stones, and it was preserved one course high. Wall 106 abuts W109 on the south at a right angle. It was constructed of a single row of medium-size stones in a general north–south direction. The wall was preserved one to two courses high. No datable finds were found near the walls. 
In the southern area, an oval heap of fieldstones (1.2 × 2.2 m) devoid of finds was found on the surface.
A few potsherds from the Roman through to the Ottoman periods were found scattered on the surface lacking any stratigraphic context, but apparently indicating the periods of activity at the site. The remains exposed in the excavation were probably part of an agricultural system in the area during those periods.