As well as illustrating Chants du Hoggar, French painter Paul Élie Dubois worked on a version of a celebrated novel of the time, L’Atlantide (Atlantis) by Pierre Benoit. It describes the vicissitudes of two French soldiers searching for lost compatriots in the Sahara and who end up in Atlantis, ruled by the beautiful Queen Antinea who seduces and then entombs her lovers. There’s more on the book and films here.