3D compound replicating a possible geometry (model 1m, see Table 5) of the Orion Bar PDR. Each cube represents one voxel filled with at least one clumpy ensemble. Coordinates are given in voxel sizes, corresponding to 0.01 pc. The colour scale (Green 2011) shows the impinging FUV flux, calculated for each voxel, for a FUV source located at [0,22.3,30]. The direction to Earth corresponds to the positive z direction.