They thought to delay and wait all day in the chamber to see if the priestess’ party returned, but Gavin noticed Who had become listless and then began to fade. Realizing the magic of this place was going to dispel Who they decide delaying was a bad idea.
Charlie scouted the tunnel, lots of natural side passages but the main worked passage went up at least half a mile and showed evidence of Egyptian design. Helen was amazed that Egyptian influence was found this far south.
They all went up and found an enormous natural cavern supported by pillars that looked like tentacles. Charlie noticed the pillars were actually writhing ever so slightly. There was a large altar of strange blue stone in the middle, a huge bone pile, three pits that appeared to have nasty stuff in the bottom and a dias with a throne. In front of the throne was a low platform with an enormously fat person laying.
The priestess M’Weru was working at the altar and 10 powerful looking tribal warriors lounged about.
They tried to find side passages around to the other side to no avail. Charlie snuck across the chamber hiding in shadows and crept up the back of the dias behind the throne. Peering around he saw the fat creature was Hypatia Masters swollen to the size of a dinner table with wallows of translucent flesh through which two bulbous eyes could be seen staring. Hypatia chanted constantly in a sing-song voice about photography, the Carlysle expedition, and being the bride of a god. This was too much for Charlie and he began having flashbacks to the trenches and the monsters he encountered there. He began yelling and slashing at the air.
The others attacked, Gavin released Who-Is-Not-What-She-Seems who grew to twice the size of an elephant and began trying to eat the cult warriors. Helen and Gavin tried to get to M’Weru, but the warriors stopped them. M’Weru began casting nasty spells, one blasting Charlie mercifully into unconsciousness when he was slammed back into the cavern wall, but the rest managed to resist. Sean charged around the side with his Tommy Gun and blasted at Hypatia while the warriors blocked him. He hit the pregnant monstrosity, but what happened next was unfathomable.
The monstrous form of the Bloody Tongue god, none other than Nyarlathotep himself in his horrific tripedal monstrous form, appeared and instantly healed his unborn progeny. This unravelled both Gavin and Helen who ran screaming from the chamber as the cultists kneeled in reverence. Sean somehow kept his cool as Nyarlathotep advanced on him, taunting him with his failures and the the horrible fates that awaited him. The elder god made it clear that to kill them here would be a mercy that he would not bestow. Sean fled. They all fled. The last thing Sean saw was the monstrous Bloody Tongue god advancing on Who as she gobbled a screaming cultist.
They fled the cavern, the tunnels, the cave and the mountain with all haste, the memories of that horrible chamber chasing them the whole way.