You can get on the TNT railroad tracks somewhere down by the wash or by the North pole. Actually now that I think of it you can get up on the rewilroad bed anywhere as long as you stay on the Dumont side of the fence which would be on the other side of the track bed. From there I don't know how to go butt I know it's legal to run the old TNT rail bed. Be CAREFUL on it as old bridges have been washed out and there is no warning as you go over the cliff, so I would not suggest hot roddin the RR. Hopefully that will help. I will see if I can dig up some info for you.
Terry