I know what your thinking! "What happened to the last 1/4 of the other half of the mine." Well I printed it over night and somehow my filament broke off in the tube on the way to the extruder, thus resulting with no filament left to print the last 1/4 of the mine. IT still looks pretty good though it will be a desk model, so it works that it won't roll around. And I will probably seal the crease in the center with something to make it more unnoticeable and I will paint it. Right now I am printing the other smaller mode though!
In some slicer programs it will put supports on the inside of the mine where it is shelled! You should be able to print it without it, so I would remove those if I were you to save filament.