  Using standard methods from string theory, this paper presents a
comprehensive survey about the most important aspects of the theory of sand.
Special interest is put on the examination of the sand-wind duality and the
interaction of ordinary (non-supersymmetric) sand with the heat field of the
earth, as solution of the field inequalities of a stone. This will lead us, in
a natural way, to completely new insights into the theory of sandstorms.
