Perhaps the area is the province described in Tuarhaivel (the elf domain
sourcebook) as being possessed technically by the gorgon but in
actuality is a shadowworld overrun province commanded by the elf
wizard "the Lich". I do not have the domain sourcebook in front of me,
but it described the gorgon attempting to overrun the province and the
lich tapping into the shadowworld to destroy all living things in the
province (at the expense of destroying elves, deer, rabbits, kerpca) ;)