Players are walking through jungle and come to a clearing where ground is torn up a bit.
Perception roll for one of characters to surmise it is a runyip wallow.
As players pass by ground trembles (seems like an earth quake) and fire shoots out of the ground
in several locations.
Huge volcano beetles emerge.
They are very one track minded and will simply go toward the nearest player in front of them.
They are hard to cause damage to and if the players simply avoid them or confuse them they can easily outwit them. They bumble about, actually quite comical.