During May 2011, a salvage excavation was conducted along the southeastern slope of Khirbat ‘Addasa (Permit No. A-6192; map ref. 22060/63894), prior to construction. The excavation, undertaken on behalf of the Israel Antiquities Authority and underwritten by Yunis Abu Zabih, was directed by Z. ‘Adawi, with the assistance of B. Touri and C. Masarwa (antiquities inspection), N. Nehama (administration), M. Kunin and A. Hajian (surveying and drafting), A. Peretz (field photography), S. Al-‘Amlah (metal detection), Z. Greenhut and R. Be’eri (pottery reading).
A rectangular area (5.0×7.5 m) was opened and remains of a farming terrace wall (W1; length 30 m; Figs. 2–4) that were also visible on the surface outside the excavation limits were exposed. The wall, preserved a single course high, was built of a single row of large fieldstones placed directly on the bedrock. The general alignment of the wall was east–west; however, its eastern part had a slight deviation to the northeast and its western part had a slight deviation to the northwest, in accordance with the contour lines of the slope.
Two layers of fill were revealed on the northern side of the wall. The upper layer consisted of brown soil and the bottom layer was brown fill with small and medium field stones (L102, L103). Similar layers discovered south of the wall (L101, L104) contained also large field stones that probably fell from W1 after it was no longer in use. Potsherds dating to Middle Bronze Age II, Iron Age II, and the Hellenistic, Roman and Byzantine periods were discovered in this collapse layer, as well as in the upper layer of fill along its northern side. A row of field stones (W2) was exposed in the northeastern corner of the excavation square; on either side of it was a layer of small fieldstones resting on the bedrock (L106, L107). The continuation of the row to the south did not survive. The row of stones was probably the remains of another farming terrace or a wall, whose purpose is unknown.
The remains exposed in the excavation join other remains uncovered in previous excavations and remains exposed at the foot of Khirbat ‘Addasa; together these point to a developed agricultural complex that was on the southern slope of the ruin. Apart from the farming terraces, there were rock-cuttings, burial caves and numerous subterranean cavities on the slope, which are probably connected to the settlement that existed on the hilltop. The finds show that Khirbat ‘Addasa was occupied in Middle Bronze Age II, Iron Age II, and the Hellenistic, Roman and Byzantine periods.