RIYADH: The Heritage Commission has concluded the fourth season of its archeological excavation project at the Al-Ma’mala site in the Baha region, part of ongoing efforts to preserve the Kingdom’s national heritage and archeological and architectural diversity. Al-Ma’mala is one of the region’s most significant archeological sites. It served as a center for extracting mineral ores, including gold, silver and copper, as evidenced by archeological remains and tools found at the site from different