Algerian Desert

The Sahara covers over 90% of Algerian territory. It is crossed by ergs (sand dunes), regs (stony terrain), as well as volcanic massifs in the far south. The Algerian Desert is characterized by low rainfall, recording less than 100 mm per year. However, it rarely snows and floods, sometimes reviving the wadis (river valleys) that have been dry since prehistoric times. The subsoil is full of water in the Albian Aquifer which extends under a large part of the Algerian Desert, a remnant of the steppe climate that the region experienced 10,000 years ago. ==References==