For long routes (>100km), the terrain tends to look flat, due to the proportions of altitude (Z) vs width/length... to solve that, we added a "terrain enhancer

For long routes (>100km), the terrain tends to look flat, due to the proportions of altitude (Z) vs width/length... to solve that, we added a "terrain enhancer", a slider to exaggerate the altitude and give a dramatic look to the 3D model :)