Yes thats probably true...

I was searching for some geology links for Tolkien when I found one and had to laugh... its from our own site Well this is pretty in depth. I did say they are a bit nuts about Tolkien there.

http://www.me-dem.org/index.php?opti...lling-articles

Hope you enjoy. Check out the galleries there too - apart from lots of middle earth stuff there are sections on my GeoTerSys with some more videos as well showing how its calculating it.