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[Skorpion]

So. I have a heavily wooded map, and I want to introduce magma to the environment by way of a magma bukkake device.
Consisting of a pump with a resevoir of magma, it will simply spray lava over invaders, solving the issues of corpse haulage, hauling clothing, and so forth.

My questioning is thus:
Will the lava set the map on fire?

If so, how do I prevent this?
(Other than not spraying lava at enemies, because that's obvious.)

[Smew]

The fire would definitely have the potential to spread across the map, I would suggest not spraying magma all over your enemies, or make a contained area in which you want to throw the magma.

[Funk]

make plant free lines to stop the fire moveing to far.
dirt roads are the fastest to make

[Skorpion]

make plant free lines to stop the fire moveing to far.
dirt roads are the fastest to make

Ah yes, firebreaks.

Will my aluminium roads melt if the magma hits them?

[G-Flex]

Aluminum melts at a pretty low temperature, so yeah. Not like any sort of road would do much to stop magma anyhow.

[Time Kitten]

I'd actually let a waterfall denote the entrance and exit of the burnination chambers, so that anybody making it any distrance alive would be doused.

[Haven]

First question: Yes, most likely.

Second: Why would you bother? Though, I guess containing the lava spray area in stoneworks would work out.

[Skorpion]

Second: Why would you bother?

Fair point. I AM playing as dwarves, after all.

[Heron TSG]

you could dig channels with optional bridges over them.

[Kanil]

Yes, why bother? I'd love to have a nice forest fire...

[Hyndis]

You say that like setting the world on fire is a bad thing...

[Duke 2.0]

Solution: Stockpiles are strange and magic things. Fire will not spread over them if it is a grassfire. Simply set a good five tile wide stockpile around the estimated magma splatter range, and you should be safe.

 Question: You could have fitted a lot more innuendo in that post.

[Hyndis]

Or make iron block roads.

I think a road made of melted down goblin armor would be a decent trophy.

[LegacyCWAL]

Solution: Stockpiles are strange and magic things. Fire will not spread over them if it is a grassfire. Simply set a good five tile wide stockpile around the estimated magma splatter range, and you should be safe.

This is incorrect.  Fire will go through a stockpile as though it wasn't even there.


As for the OP:
Magma will set fire to anything that can burn at that temperature, including grass tiles.  If there's plenty of grass, you can get a really big fire sweeping across that z-level.  However, trees and shrubs won't burn, so you'll still be able to gather useful stuff once the fire dies down.  It'll also burn away all the flammable stuff, and with nothing to burn, further magma dousings won't cause a fire (or not a big one, at any rate) as long as you do them frequently enough or trample the ground down to soil.

[Time Kitten]

Just be sure to recruit all your woodchoppers and make them stand on boulders or smething while it sweeps through.