The flames lasted for a full minute, and the party took advantage of this to move a hundred feet down the huge tunnel. When the flames died out, there was no sign of the things, or any remains for that matter. A battle, and I was barefoot. Yeah, me too. Those creatures have the hellish ability to grow spores on anyone they touch.
Death is quick and painful, and no known spells can slow or halt the process.
Well, they walk no more. Let's get a move on. The adventurers, no longer smelling of underground swamp mud, moved onward in the huge tunnel.