ACKS: In Search of the Unknown
The Moathouse was once an outpost for the Cairn Hills Militia, located near the Mistmarsh, midway between Blackwall Keep and the Free City of Greyhawk. Many years ago, the fort was overrun by troglodytes and nearly destroyed. While the militia eventually reclaimed the Moathouse and destroyed that band of troglodytes, the fort remained abandoned and in disrepair.
With the slaying of the naga Explictica Defilus and destruction of her cult, it appears some remnants of the reptile god cult took up residence in the Moathouse under the leadership of a new master.
The fort itself has not been repaired, but an intact dungeon has been found beneath it.