Relief maps of the United States

Shaded relief maps of the United States.

The maps use false-color 3-D shading to show changes of altitude, somewhat as if you were viewing the relief from a satellite. The maps are quite spectacular and very instructive; if you study a part of the country that you thought you knew intimately, you'll see all sorts of things you hadn't noticed before.

http://birrell.org/andrew/reliefMaps/