I'm interested in raising either Duroc or Red Wattle pigs. While looking up information about raising pigs, I've noticed that the images are somewhat bleak. The pigs are always in a desolate pen with a few patches of grass and lots of mud. It looks like a wasteland. Is that just how it is? Do they destroy the land? I'm assuming that the pen didn't start out so barren and the pigs had plenty of space so overcrowding isn't the issue.