I have a problem.
I'm hooked on the minigame of "try to build something interesting as the magma and water and ice falls down around it" which this damn volcano glitch enables (generate with magma sea but no hell layer: volcano tubes don't spawn if you approach from the northwest heading southeast) and the access to the caverns with their interesting wood types and interesting bodies of water which then spill into the magma or freeze until it rises up to melt them from below.
I am a legendary woodcutter now. I took a minecart full of booze and swapped it into my backpack so I didn't have to carry around a ton of skins of booze, from that 833 units originally I'm down to 583 after hundreds of tell my shortest poem (a couplet), talk to god, chug some booze to get back to
Focused! again.
I've got 5 or 6 of these scattered around the map on this character alone.
Though this is the first time I've done the sprouting flower-sparring structure like this, I usually kind of grow them more chaotically as I build upwards to ambush level on the surface and try to lure unwary goblin patrols to come play with me on top so I can chuckle as they plummet a hundred or more z into a mixture of ice, water, magma, wood, and stone... generally causing them to explode on impact.
Mostly though it's just the satisfaction of being able to balance the need for supports, starting wood supply (can't chop trees without letting the magma/water/ice advance too far and screw up any plans I had), the chaos from collapses, failed building steps, and still being able to pull out something aesthetically pleasing.
Symmetry is surprisingly difficult to achieve since the best initial sections are when the magma flow has an exposed side below the surface of all the other lava, limiting where you can expand before the nearest wavewall reaches you.
Putting up barrier walls helps, only gotta put one ring per level due to the lack of pressure, thankfully, but it's still tricky since you can screw over your wood supply and bad collapses on extended ring sections can screw you over badly.
This one was really deep with three levels of open space beside the magma flow from the bottom up to the top wavewall, and I saw the icewall coming in time to get the top end sealed before it hit me.
Decided to expand the wings on the bottom since the collapse slowed down due to the ice fuckery higher up, but I wasn't able to get a big full dance floor without risking having to scramble to shut out a wavewall or worse dealing with a magma incursion inside the structure.
Here's an in-progress collapse shot to hopefully make that a bit clearer.
Sometimes you find them where the tube disappears and the magma just sits there politely waiting until you do something (cut a tree, start building, etc) which is a nice head start, but if there is water involved it will generally be mid-collapse by the time you get down into the thick of it anyways.
Shame you can't designate the constructions from up on the rim!