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(abridged) We present extensive multi-color imaging and low resolution VIMOSIntegral Field Unit spectroscopic observations of the X-ray luminous clusterAbell 2667 (z=0.233). An extremely bright giant gravitational arc (z=1.0334) iseasily identified as part of a triple image system and other fainter multipleimages are also revealed by the HST-WFPC2 images. The VIMOS-IFU observationscover a field of view of 54'' x 54'' and enable us to determine the redshift ofall galaxies down to V=22.5. Furthermore, redshifts could be identified forsome sources down to V=23.2. In particular we identify 21 cluster members inthe cluster inner region, from which we derive a velocity dispersion of\sigma=960 km/s, corresponding to a total mass of 7.1 x 10^{13} solar masseswithin a 110 kpc radius. Using the multiple images constraints and priors onthe mass distribution of cluster galaxy halos we construct a detailed lensingmass model leading to a total mass of 2.9 x 10^{13} solar masses within theEinstein radius (16 arcsec). The lensing mass and dynamical mass are in goodagreement although the dynamical one is much less accurate. Comparing thesemeasurements with published X-ray analysis, is however less conclusive.Although the X-ray temperature matches the dynamical and lensing estimates, thepublished NFW mass model derived from the X-ray measurement with its smallconcentration of c ~3 can not account for the large Einstein radius observed inthis cluster. A larger concentration of ~6 would however match the stronglensing measurements. These results are likely reflecting the complex structureof the cluster mass distribution, underlying the importance of panchromaticstudies from small to large scale in order to better understand clusterphysics.Comment: 14 pages, 12 figures. Submitted to A

VIMOS-IFU survey ofz~ 0.2 massive galaxy clusters