I have an artifact window (which is worth over 100k and has me worried about an early Fun visit, but I digress). It is made primarily of zircon. I know (or I've heard) that artifacts can't be permanently destroyed by magma, but can it be deconstructed? How about building destroyers, can they deconstruct it?
If the answer to both of those questions is no, I'm thinking of installing it at the top of my volcano magma source like so (sorry if I'm not using "standard" symbols, I'm not sure what they are so (7 = lava, X = wall, F = smooth floor, 0 = open space hole with flowing magma, L = potential spot for artifact, C = channel that is actually one level above this, I couldn't be bothered to to a multi-level diagram and the question isn't about the functional magma "waterfall" anyway):
77777
XCCCX
X000X
XFFFX
XXLXX
I realize the lava "shouldn't" flow into that square, but who knows... The lava is pouring in from a level above from channels in the volcano lip. A magma-immune building destroyer "shouldn't" be able to reach there from the north, but actually I think it is possible that it could climb or fly there? I know some folks would say try it out for Fun and !!Science!! but the odds of it ever happening even if it could happen are pretty slim. I know the wiki says artifacts can't be completely destroyed under normal circumstance, but I'd rather not do it if it is not 100% safe from the north side, since building the lava works being fed underneath here are taking me a lot of effort and time to produce and I'd rather not cheat quit or lose this fortress yet... anyone have any idea if I can build that L safely (at least from the north) there?
I suppose I can add a bridge on the south side that retracts upward as a "blast shield" in case I see a building destroyer coming, and I think I'll do that regardless since it's easy to do anyway... but does anyone know if it is actually necessary?