My favorite 50 foot monster.

"...a monster of vaguely anthropoid outline, but with an octopus-like head whose face was a mass of feelers, a scaly, rubbery-looking body, prodigious claws on hind and fore feet, and long, narrow wings behind." - The Call of Cthulhu
My weekly post to the ASS blog. Topic: 50 foot Monster in 15 minutes