Endless sandy landscapes, the scorching sun and complete absence of people around… This is how one of the most famous deserts of the world — the Sahara - is drawn in the imagination. It seems that the golden dunes have always been here, but this is not so. When you look at the Sahara, its endless sands and silent dunes, you want to know what lies under millions of tons of sand. In this issue, we propose to take a trip to the past and find out: - whether this part of the African continent has always been an arid and lifeless desert. We will find out what is hidden under the sands of the Sahara - and also reveal incredible facts about this mysterious place.