The collapse of the second half didn't go so well. The parts that fell through the lava and floors into the
semi molten rock are gone, but a final section that hit solid rock remain. Worse, the magna that was hit teleported to the top and then fell atop on the pool, so bits of it have diffused into my hall ways.
However, - the extra amount of lava was all in all so small that it eventually evaporated.
Lava teleported to the top of the remaining spire. This could be an alternative (but not easier) way to bring magna to the top. 'Just' drill out a solid pillar with a cavity on the top and dump it into lava.
Raindrops are falling in my lava, but it creates steam, - not obsidian. It could otherwise have destroyed the concept of this fortress.
The final collapse is set up after all layers below has been hollowed out. Now we just wait for a
#%&! freeminded cat to walk back the perimeter as I this time remembered to wall off the corridor.
The final collapse is in progress with a storm of dust and magna mist. We are now so used to the collapses that I didn't even call of the training of the Cavern3 military.
All that remains is now a thin shell that couldn't fall into semi molten rock, and this much lava won't evaporate on its own. (It was emptied with a bit of mining and channeling.)
(And unrelated. A group of bow goblins abmushed my broker, - he managed to catch more than 30 bolts before dying. In an attempt to save him I discarded all safty measures and let my military charge out, and they took down the ambushers without casulties. I guess all that training is beginning to pay off.)
Only a final cleaning by channel digging remain.
The thin shells have been completely dug away by hand. I found the best method was to isolate a miner at the top of a spire (repeat leaver action while brigde is deconstructed) and then have him chew downwards with 'up ramps'.
I'm becomming a great fan of 1 with bridges as means for temporary access as they can be deconstructed in on go and usually from the correct side.
The great work is done!
28 levels of borehole are now open to the sky. I would have like a few more, but I set the world parameter to only 50 sub levels to aid my frame rate. There are 15 levels below the magna that I eventually will have to 'explore'.
Enjoying the view of a clear sky from the 3rd cavern.
Status at the end of the hole drilling. 3rd Obsidian, 1060, Late Winter.
Yes, some miners went 'missing' while working with lava. (And a kid made a larch ring worth 400k.)
And another unrelated note. My chief medical dwarf is not just saving life, - she creates them like a clock work.
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Topic: Boardstrap, - Thermal borehole (HMM5 style) (Read 17864 times)