Funny that this thread pops up now. I had a 'settlement' just like this in the woods behind my house. My neighbor's kid's pet rabit got loose and they were out in the woods looking for it. While looking for it, they stumbled upon the 'settlement'. The neighbors in the area were somewhat concerned. Not something you want going on in your own back yard. Anyway, the cops got involved and took care of the situation. They are not there anymore.