Over the last few decades the Colombian foothills area has been explored with mostly 2D seismic data. Repeated efforts to process and reprocess the 2D data gave little hope of achieving a good image of the subsurface. In the last five years 3D seismic was acquired over the intricate part of the mountain front. This area exhibits one of highest levels of complexity in land seismic. The results of the 3D acquisition and processing show a much improved subsurface image (Figure 1). A solution to this difficult imaging problem is presented. The acquisition of 3D seismic and the introduction of the latest processing techniques are the keys to delivering improved subsurface images in this very difficult area.