I came across this video clip titled 'Sahara Sandscapes'. It shows the rock formations in part of the Sahara Desert, like small islands in a sea of sand, and shows how minuscule humans and human-made objects are in the midst of this vast desolation. I recommend watching it in full-screen mode.
Details of the trip can be read here. Kudos to the videographer and photographers for capturing the intensity of the desert so well. I've traveled in the south-eastern parts of the Sahara, where the terrain is different from that portrayed here, but the vastness and emptiness are the same.