I have never been to stonehenge, but i have been to carhenge--
http://www.carhenge.com/
-haven't you dreamed of going to nebraska to see big old american cars reconfigured to look like stonehenge, in the middle of an old farm field?
i should make a point of telling CK-& SWMBO to check this out!

and to fell a tree, you start with a small piece of hard string*-- girdle the tree-- it will kill it in year or two, and in an other 10, the wood will be dry, and easy to hack down. right down to the root. * or copper wire, or even a lenght of vine--