[quote=GreivousKhan]
Weight plz? ^^
[/quote]

On average, one cubic foot of muscle tissue weighs around 63 pounds. Do the math and then subtract about 50% for the fact that the creature in question doesn't take up the full 30x240ft area.

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Did the math. 

Factoring in that the body isn't 100% muscle, then adding in the weight for a skeleton of that relative size, then the thicker skin... it comes up to about 100 tons.