Carcohl is only known of through mnemaglyphs found in the deepest portions of the Gygaxian Gyre. If the scratchings in the walls can be believed, Carcohl or The Carcohl is a dragon snail of Gargantuan size

He stood before me, a freankenstien of a man beast that towered twenty feet tall or more. Its rigor colored flesh stunk of eons of decay both sickly sweet and of putrescence beyond what the mortal mind could fathom. I tried to gag it from my throat but my stomach refused to relieve its contents and for that made me more uneasy.

Former Cult Leader who outlived his usefulness

When a thousand years of dust settled upon the worked stone floor of The Grey Tomb, a new sage was born. A creature, of dust, time, age, wisdom. The dust that was once the bodies of ancient wise men. It coalesced and swirled into being, small and wispy, dry as its home. It mutters words of wisdom for no one to hear. Begging its dark home for a soul to learn from.

'You may cage the animal/ But you can't take away the rage'
Shinedown - Heroes

Her lips pressed against the soaking flesh of the toad, and Viova's words entered her mind...

Whenever the earth trembles and shakes, it is the children of the Stinging One furious that the nourishment due to them, has been denied. Honor them unceasingly by sating their hunger, or the earth itself will swallow man-kind whole to feed them''.

-Taken from the Arahuain Codex, the most sacred text known to the priests of Ixtili, the Stinging One.