Oh yeah, I also made a tunnel that went... a very long way. I think I put signs up and it was about 2.5km long. Half of that had track and I had a strip mine that went to bedrock, but still couldn't get enough iron to finish the track all the way along the tunnel.
For some reason I can't get on. When I tried using the /bin Kos uploaded it said outdated version. When I switched to the most recent it said bad login :(
when I logged out last night I was standing on the edge of a wide open plain
today I logged in and was in a huge forest! - brain was all WTF??
(know now, you guys planted stuff)