  Massive objects (clumps) of Cold Dark Matter (CDM) in Galaxy can appear due
to its annihilation as discrete sources of gamma-radiation. Some number of
unidentified regular gamma-sources, observed by EGRET, can be accounted for by
massive CDM clumps. Future gamma-ray expreriment GLAST in combination with data
of EGRET will enable to probe a wide range of models of clumped annihilating
CDM.
