Entrance of the passage through the Siq channel at Jabal Ithlib area of Hegra (Madain Salih), UNESCO, AlUla, Medina Province, Saudi Arabia

siq channel jabal ithlib hegra ula saudi arabia rock formations natural passage sandstone cliffs desert landscape beauty tourism archaeological site ancient history exploration outdoor adventure geology cultural heritage travel destination scenic view clear skies scenery unique geological nature trail visitor experience hiking historic serene environment sunlit canyon colors sand dunes