  Rich superclusters are the ideal environment for the detection of cluster
mergings, because the high peculiar velocities induced by the enhanced local
density of the large-scale structure favour the cluster-cluster collisions, in
the same way as seen in the simulations.
  The Shapley Concentration supercluster represents a unique laboratory where
it is possible to follow cluster mergings and to test related astrophysical
consequences, as the formation of shocks, radio halos, relics and wide angle
tail radiosources, and the presence of galaxies with enhanced star formation.
  We present the results of an extensive multiwavelength survey of the central
part of the Shapley Concentration, with the use of optical spectra, radio and
X-ray data.
