| The 
                          feet are a lightweight aluminium structure, which is 
                          carried in the dunes and is assembled there by hand. The 
                          sand-anchor consists of a plate and a long spike, which 
                          is drilled into the sand to prevent the foot from sliding 
                          and moving in this soft ground.  The 
                          living units are mounted on top and are connected with 
                          the base. There 
                          are two kinds of feet in the deep desert program providing 
                          perfect adaptibility to each living unit of the 4WD 
                          system.  |