MinnFinn

I've had mixed results with Google Earth. Some map areas are relatively detailed, at least so you can pick out features of ridges, draws, creeks and other major structures. Other map areas, it's poor resolution and you can see little more that shading. It may be enough to find woods vs. grassland. Yes, the elevation feature is good to help distinguish topo features.

I also have used MS Virtual Earth. Though the field of view is somewhat limited, the maps seems to be better detail. I've used both to get an idea of new hunting areas the woodland, elevations, etc. to limit the time on the ground of where to start.