What type of soil does the Atacama Desert have?

The Atacama is a barren landscape not unlike the surface of Mars. It is made up of hills and flat lands whose surface is covered by sand, pebbles and rocks. Some areas have old volcanic lava flows and some areas have dry salt lake beds. There is some volcanic activity in parts which have geysers and hot mineral springs. There is almost no vegetation present except in some isolated areas. For some photos of the Atacama, click here.