25F GOING APE. Upon falling out of the wall teleporter, the party will be faced with a winged zombie ape flying about twenty feet off the floor.
Winged Zombie Ape (AC 7; MV 9”/15”; HD 6; hp 29; #AT Spear of spearness; D 1-4/1-4/1-8; SA Always lose initiative; SD Limited spell immunity; XP 399)
Eliminate the ape and you get his magic spear. The usual hole exit teleporter takes you to 25G.