aerial panoramic view to el berdj mountain and erg gorge in tassili najjer national park, algeria

abstract acacus adventure africa ajjer akakus algeria algerie arid barkhan berdj colorful desert djanet dry dune formation geology gorge hamada heat heritage hill illizi landscape mountain najjer national nature noires orange outdoor panorama park pavement reg rock sahara sand scenery scenic sculpture sea shadow sky stone sunny tadrart tassili unesco