RIYADH: Saudi Arabia’s Heritage Commission has completed the third season of the archaeological excavation project at the Al-Ma’mala site in the Baha region, continuing efforts to document the Kingdom’s heritage. The excavations uncovered evidence of urban development more than a millennium old, shedding light on the historical aspects of archaeological sites in the Kingdom. Excavators found granite stone walls, some with mud bricks and gypsum plaster, reflecting advanced building techniques, the Saudi Press Agency reported on Tuesday.