Greyhawk
Pinnacle
This huge, sandstone-colored standing stone is some 150 feet high and 80 feet in circumference, and atop it nest a group of six manticores who attack any potential prey in range. However, Pinnacle’s secret lies below this prominence. A magically concealed door at the foot of the rock column gives access to a seemingly endless series of very sharply descending, 3-foot wide stone stairs which lead to a series of bizarre, multi-colored catacombs filled with drifting mists. Very few have ever discovered Pinnacle’s secret portal, and even fewer have returned, none with the stones they sought.
Wandering the catacombs are great, stone-skinned, mottled purple worms, and ropers of unusual size, capable of melding into stone and allegedly moving at great speed, leaving fog clouds behind them as they retreat. If that isn’t enough, there are rock lizards of rare size and aggressiveness, crysmals, oozes and in the pools which fill many of the dripping caverns, gigantic moray-like eels which can squeeze the life out of a man in but half a minute