People watching Arak tree (Salvadora persica) at the foot of a fault in sandstone wall, Sharaan Nature Reserve, AlUla, Medina Province, Saudi Arabia

arak tree salvadora persica sandstone wall alula medina province saudi arabia visitors landscape nature tourism geological feature desert vegetation outdoor activity clear sky rock formations hiking exploration environmental conservation natural beauty cultural heritage unique flora ecological diversity adventure scenic view arid green plants sunlight history ancient trees terrain biodiversity sustainable