Wally Wallington, a retired construction worker, is building his own Stonehenge in his backyard in Flint, Michigan.  

A man in Flint, Michigan is building a Stonehenge in his back yard, moving many tons of stones up int… http://t.co/kMSrHM8f

— Boogie Man (@BoogieManJornl) July 28, 2012

Only using simple machines Wallington demonstrates how he moves stones that weight about the same size as a minivan, even a barn. 

Flint, Michigan man thinks he’s solves Stonehenge. Family thinks Poppops plays with concrete. http://www.youtube.com/watch?v=oK1Rzch89Dw

— Brian Studwell (@bwstud) January 21, 2010

If nothing else this is a display of human ingenuity and possibly a key to unlocking the past.