Deep structure and evolution of the crust and upper mantle were demonstrated by Deep Seismic Surveys (DSS) in Pan-African terrain of the Lützow-Holm Complex (LHC), Dronning Maud Land, East Antarctica.  DSS were conducted on the continental ice-sheet of the LHC in austral summers in 2000 and 2002, by the "Structure and Evolution of the East Antarctic Lithosphere (SEAL)" program.  Processing of the DSS data, using NMO correction and CDP stacking procedures extracted clearer image of reflections of the crust-mantle boundary, together with several crustal reflections. A layered structure around the crust-mantle boundary was clarified by coherency enhancement processing after applying NMO to very far offset data.  Crustal structure of the LHC imaged by seismic reflection imaging suggests a tectonic influence of compression stress in NE-SW during the Pan-African, in the last stage of formation of a broad mobile belt between East and West Gondwana super-terrains.