Region around the cluster MACS J0717.5+3745

V, R and z' color image of 20 x 20 arcmin2 region around the cluster MACS J0717.5+3745 as obtained with SupremeCam on the Subaru Telescope. The contours map the different levels of galaxy overdensity compared to the background. The high density contour region (top right) corresponds to the cluster and the shallower region in the bottom left part corresponds to the filament.