The Smithsonian's Sackler Gallery in Washington is hosting an exhibit titled Roads of Arabia, devoted to the ancient history of the Saudi kingdom. Looks wonderful. Above, an anthropomorphic stele from the site of Ha'il north, dating to around 4,000 BCE.
A gold mask from a royal tomb outside the city of Thaj in the northeast, 1st century CE.
Tombstone from the early Muslim period, 9th century CE.