"In case you're not up on your metric system"

Just showing off that patented patronizer, huh?

282RA,

I looked at your links and it sent me looking for how the two things (your figures and the ones I got from the National Geographic site) could both be true. I had the hardest time finding maps of Greenland to show me the exact location of the Humboldt glacier (finally found its coordinates and sussed it out from there).

Since the Humboldt Glacier is a VERY large part of the whole of the Greenland Icesheet, and it's only 300-400ft at its thickest, that means that the elevations on Greenland have to be approaching those of the rocky mountains. I mean, at 5000 ft AVERAGE thickness, that means the peaks have to be two or three times that high -- or else the entire top elevation of the entirety of Greenland is higher than the highest peak of the Appalachian mountain range.

Need to do some further digging. Are the elevations on Greenland really as tall as the Rockies? I'd never heard that before.