That looks a little too clean, like maybe you used TNT or the map editor.
![:P](http://bc-central.net/forums/Smileys/BCSmileys/tongue2.gif)
But yeah, depending on the generator, sometimes you can dig far enough to remove all traces of light before you come close to lava and/or adminium.
As for the ingame ALU, the guy was talking about eventually building an entire processor. I fear that will bring the Y2K bug myth to life.
![funny :funny](http://bc-central.net/forums/Smileys/BCSmileys/vb_laugh3.gif)