User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-5089728-20120926040336/@comment-5043481-20120928204325

Thinking about it, I agree with cottonmouth. It seems as though it was something they forgot to put in, or intentionally left out so that volcano monsters could not be killed by keeping them in lava.

And as Kayanba said, any hole that opened under the lava would cook the monster inside its shell.

Mmmm. Well done Agnator...