interesting theory, since the game is set hundreds of years after Oblivion, the geography might change dramatically like it shows in the novels.
http://www.flickr.com/photos/rudypoodoo/5270469374/
This pic shows the geological evolution from the currently still played Elder Scrolls IV: Oblivion, thru how it looked like during the Vvardenfell Red Mountain mega-super-eruption as depicted in the Elder Scrolls Novel Inferno City, to how it may look like after the great Red Mountain mega-super-eruption (and how it most likely will look like in the upcoming, most anticipated The Elder Scrolls V: Skyrim!)
Click to enlarge

http://www.flickr.com/photos/rudypoodoo/5270397174/
Dragons re-awake, Red Mountain has already erupted it's most massive epic scale eruption ever (the biggest eruption ever on the planet Nirn, so powerful that lands nearby will sink into the sea and enough to cause rifts to grow that will geologically split tamriel apart into several different sized islands) thus causing all kinds of ecological and geological upheavals and land riftings to go on thruout all of the continent of Tamriel! Is this the result that we'll see in Elder Scrolls Lore come the Elder Scrolls V: Skyrim?












that would be awesome.