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v0.34:Magma mist
| This article is about an older version of DF. |
Magma mist is the !!Fun!! yellow mist created in three cases :
- when debris from a cave-in splashes into magma
- when a fast-moving item or creature skips across magma
- when you drop a sufficiently large item into magma
Unlike normal mist, magma mist is not created when a magma falls down a Z-level. It sets fire to all non-fire-resistant creatures that share a tile with it, and in earlier versions would instantly kill most creatures who breathed it in.
Magma mist tends to be around longer than cave-in dust, and is created in quantities proportional to what you drop into magma.
When it appears outdoors, it is called lava mist instead but is otherwise identical.
Magma mist is not to be confused with being "caught in a cloud of boiling magma", a bug involving messages displayed when caught in cave-in dust. This is not something to worry about.
Preventative Measures
If you are being careful around magma, it isn't very likely that you'll run into magma mist at all, let alone have to worry about your dwarves breathing it in. The simplest thing you can do to prevent it is to watch out when dealing with mining above magma, or channeling above magma in particular.
If you plan on using a magma garbage disposal system, have sufficient z-levels between the dumping point and the magma/lava. Mass dumping a whole siege worth of corpses, body parts and assorted trash may generate magma mist clouds 3 z-levels high and wide. A single large corpse (e.g. a troll) is enough to cause a small magma mist cloud, potentially fatal if the magma's surface is just 1 z-level below the dumping point.
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Side View. Fun (left) and completely safe (right) magma garbage disposal points showing typical magma mist clouds after dumping a few corpses.
Weaponization
Magma mist can be used as an ignition device on various targets if you do not want to use magma itself and wait until it evaporates.
Channel a moat right next to your main fortress. Fill it with magma. Drop one (or several) large, unneeded items in the magma from a few higher Z-levels when an enemy walks on the path. It can also double as a waste disposal system.
Of course, since it sets targets on fire, be sure that it does not permit the burning target to reach your dwarves (or booze stockpile), and be sure that the invaders are not fire immune (like a dragon or bronze colossus).