Aerial view of Qasr al-Farid, the largest tomb within Site of Hegra (Madain Salih), UNESCO, in the area of AlUla, Medina Province, Saudi Arabia

hegra madain salih unesco alula tomb ancient architecture desert saudi arabia historic site aerial view sandstone archaeology cultural heritage historical landmark middle east wildlife excavation tourism exploration preservation sunlit landscape monumental structure history geological formations nomadic culture art craftsmanship local flora panoramic remote archaeological stone early civilization efforts travel destination