I get the holes to break a horse leg in the rest is a little deep for me
I don't know about the "tons" of hay, but I have seen where they have a den in the middle of a soybean field and they will eat the bean plants right down to the ground for 75-100 feet out from the den hole in a near perfect circle. You have to hunt from a treestand and be able to look down on it to appreciate just how perfect of a circle it sometimes is. A circle 200 feet across is not too much less than a square 210X210 {1 acre}. Probably not just one but a mother and two or three little ones.
Also, cattle can break their legs in a den hole too. Had a buddy twist his ankle in one while coonhunting one night...he might as well have broke his leg. Don't even try to plant a garden around them.
Woodchucks are strange little animals, and very political. Some prefer to live out in the woods and seem to do no damage at all, but the democrat ones, you know the ones that always need a free ride, move in and destroy the neighborhood.....they'd like to see my guns taken away too!!!