a 5x8 mile wide pipe, is the largest in the world, that i know of, even the ones from south africa was not that big. a 2mile wide pipe we are drilling now, thats a super kimberlite, this is past that.. remember, most kimbers are about 500--600' wide.. also says to me, they got the road put in after cutting the trees out, and probably sold to a logging company / sawmill, always can buy them back to make housing, because something this big, you will need housing there..
tramp