Work has progressed quite well on the rail line, however we seem to have run out of rail, maybe we shouldn't have made a double line right away?
Neverwhere is around 500 meters west of our old entrance so the line should go diagonal at some point, or do we want to just make the line go straight to titan?
Because the line from Neverwhere to Titan runs diagonally, when our line reaches underneath the old entrance there will be an additional 800 meters of rail needed to reach it.
DwarrowDelf's line is only 350 meters away from ours, or 250 meters away from our old entrance, so an easier option would be to build up to it then transfer. However I guess we want to reach our entrance so I'll assume we want to continue the line as it is.
The line is already 200 meters short of the old entrance so we need an additional 1000 rails, not counting making the line double, also not counting rails we could pull up from the preexisting double line.
I could make more rails fairly cheaply, however maybe we could go mineshafting? There are a lot of rails out there, I got half a single chest from the shafts around dumathoin.
I found a passage going between DD's line and ours, It's about halfway along the line. I have switched off the lever at that point to stop your cart, then just hop off and walk 400 meters (i know the sign says 250 meters, oops).
From there take the line north untill it stops, then get off again and go West for neverwhere or East for Titan.
Lastly I must point out this, our line is at level 11 while neverwhere's line is at level 24, our line is also about 100 meters east of the old entrance, as we get close maybe we should think about where to put the entrance, then dig down to meet the other end of the line?