Elf created a 2-D synthetic model based on their 3-D survey. This velocity model can be seen in Figure 3. The model has source spacing of 50 meters, receiver spacing of 25 meters, and a full offset range of 190 m to 3340 m. Figure 4 shows raypaths consistent with the synthetic model's geometry overlaying the velocity model. There is a definite shadow zone on the reflector under the edge of the salt body.