Special project item, 720x720 basemap,
(there are 5 maps in this set for multiple use) crop a GoogleMap image (or other) to 720x720m
and save it as a 512x512tga image and name it basemap1 , then save it in this folder and overwrite the existing file.
Then import it into Trainz. It appears 1m above the surface,
lower it below ground level and switch wireframe on or off (F9) move and or rotate to suit.