Rise of the Runelords
Thistletop C3 Howling Hole
"Three thistle tunnels open into a large cavelike chamber. Above, the thorny canopy grows thin enough that tiny slivers of the sky above can be seen, while below, the ground consists of trampled
dirt. To the west, the distant sound of sloshing waves echoes up from a hole."
The Thistletop goblins use this chamber as a staging room for raids, gathering here to receive final pep -talks from the commandos. The hole drops down into area C27 below, a sea cave inhabited by a pair of dangerous tidal predators known as a bunyips. It's a DC 20 Climb check to navigate the 70-foot shaft, which opens into the sea cave 10 feet above sea level. The water is deep enough that the 80 foot fall into the water below deals only 2d3 points of nonlethal damage plus 4d6 points of lethal damage.
The goblins know something monstrous lives down below-the bunyip's howls drive them into a panic on a daily basis-but none of them have actually seen the bunyip up close. At best, they've had brief glimpses of something big and gray swimming in the water now and then. Depending on the goblin interrogated, the shape is that of a fish, an octopus, a ghost, or an enormous crab. The goblins have taken to dropping prisoners (and unruly goblins) into the hole, since the "Howling Hole," as they call it, usually remains quiet for a few days after such a sacrifice.