saudi arabia old al ula lihyanith petroglyphs
Old Al Ula is a rare example of an Islamic City, which goes back to the 7th century A.D. The building material was reused stone brought from archaeological site, Al Khuraiba located nearby. Many of the Lihyanite inscribed stones, alters, stone blocks can be seen today in existing houses. The houses were lined side by side to form an outer enclosure wall to protect the city against enemy attacks.