I know I could easily probably find this out by searching around, but I won't have the opprotunity for a couple of days to do this extensively. But heck, I've seen you all be more informative than a majority of web pages that I've found on some things. I need to know some sort of information to figure out the location of something in a story... So...
Mount Fuji. About how far away would it be from Tokyo, and what would be at the base of it? Is there any general information that would be good to keep in mind for the surrounding area?