I have to admire the level of persistence that it takes to do this sort of thing by hand. Looking at the contour map, it actually looks pretty good to me. A little bit of smoothing shows that the mountain spine is actually fairly broken up:

Advance_2_sample.jpg

I am regularly amazed when I look at an area that I've studied on a topo map and then look at a 3D image. My mental model from the topo map tends to be way off.