1) Find the file named "maps-3126.zip" in your ~/.twm directory.
2) Open the file [duh.]
3) Copy the file named "new_10-1.tmx.gz" to TMW install folder/maps.
4) Rename the file to "new_21-1.tmx.gz"
5) Log in again - note that the map is NOT the correct one.
6) Walk around by the rock deal in the upper left corner, and *Poof*, you're back in the pinkie cave.
7) Don't do that again.
8) Bug the admin until they supply a mapfile ;)
I'm sure someone will abuse this somehow.. I can't wait.