Cleon
Legend
Updated.
We'll need to whip up some flavor text and tactics.
Environment: Any?
Organization: Solitary?
Challenge Rating: 18-20?
An undead mass is about x feet in diameter and weighs roughly x pounds.
That environments and organization fits.
I think they look like a CR 18.
25 foot diameter and 3 to 8 feet in height?
A back of the envelope calculation suggest 75,000 to 90,000 pounds weight, assuming about half is space between the crammed-together corpses.
Call it 40 tons?