  We derive the transverse flux correlation function in the Lyman-alpha forest
at z~2.1 from VLT-FORS observations of a total of 32 pairs of quasars. The
shape and correlation length of the transverse correlation function are in good
agreement with the paradigm of intergalactic medium predicted in CDM-like
models for structures formation. Using a sample of 139 Civ systems detected
along the lines of sight toward the pairs of quasars we investigate the
transverse correlation of metals on the same scales. We find that the
correlation function is consistent with that of a randomly distributed
population of Civ systems. However, we detect an important overdensity of
systems in front of a quartet.
