Reach up to the skies or dig deep below, expand your base vertically... If you're into that kind of thing. Original by Simcra, ported to 0.14-0.16 by Erdbeerbaer. Port to 0.17 started by DeltaNedas and continued by Danacus.
https://yadi.sk/i/i1Qj3Erc6_bJ-A
Hmmm... I'm not really sure how to fix this.
