You begin tearing down the barricade, revealing a chamber beyond. The walls of this cave and its timber supports bear scorch marks, while the charred bodies of three goblins lie sprawled on the floor. To the west, a partially dug out alcove has revealed a flagstone wall with a narrow crack that opens into another chamber, within which a faint fiery radiance flickers.

???
Before you can tear it down too much, a burned goblin face peers through the timbers at you,
"Stop! Stop! You’ll angry up the fire monster!" he whispers to you. This is clearly one of the goblin ghouls, but he looks more terrified than threatening at this point.
Catacombs Map