Close-up of sand dunes in Erg Chebbi sand sea, Sahara Desert, near Merzouga, Morocco, North Africa, Africa

africa arid landscapes backgrounds close up close ups color image contemporary day desert deserts dunes erg chebbi generic location geology landscape landscapes merzouga morocco natural phenomena natural world nature nobody north africa outdoors photography physical geography sahara sand sand seas sandy scenics shapes surface processes topography travel travel destinations vertical african color colour daytime moroccan northern africa outside sirius collection