Try whether you can do something with this: http://edcftp.cr.usgs.gov/pub/data/DLG/100K/ Yellowstone is, of course, under Y. There's something called Blackfoot in Idaho. No Bitterroot Mountains. also, importing 16-bit DEMS and similar formats into Bryce: http://www.nps.gov/carto/silvretta/bryce_dem/ Patagonia: http://www-radar.jpl.nasa.gov/glacier/Patagonia/patagonia.html Not very detailed, I'm afraid. Interesting maps: http://visibleearth.nasa.gov/Land_Surface/Topography/ for instance, the tectonic map of the North and South Poles.

-- erlik