Sarna lists the Mammoth as 277 meters in diameter, so if you loaded the Overlord Add-on in HMMap, and then edited its size to 277 meters, that would be pretty close. Sorry, I don't have a real top-down view of the Mammoth, and a quick search of the Net only produced 3/4 or size views. But the scaling suggested will get you in the ballpark.
Basically, it will take up about 9x9 hexes, or 1/4 of a standard map sheet.
[/img] [img]http://www.heavymetalpro.com/countries/ ... rolina.gif
* There are 10 types of people in this world. Those who understand binary and those who don't. *