Celebrim
Legend
40'x40' facing wt. 40' tail and a serpentine neck implies a total length of 120' or so from snout to tail tip. That's pretty darn big. I personally feel that is so big that a human cannot at present get his mind around the scale of a living moving creature that big. Maybe by standing on the runway while jumbo jets fly inches above your head, but then jets lack the organic rippling power of a living thing. Maybe scuba diving with blue whales, but then again, I don't think anyone has ever managed to do that. Forty yards long is plenty big. Get in a canoe and have a 18' foot long croc swim along side you. Have a full grown african elephant charge you. Get some perspective before you imagine the need for something bigger. That's just huge. Colossal even. What do you need bigger for? The bigger you get beyond the ability of your players to grasp the bigness of the creature, the more cartoonish your critter becomes in thier imagination.