Over the centuries, mankind has built and moved some impressively large objects. Here we've collected some of the biggest - some of these are actually so heavy that historians can't figure out how anyone was able to move them! Heaviest Objects Moved Pre-Machinery Stonehenge Up to 25 tons each Constructed approximately about 10,500 years ago, [...]The post 8 Of The Heaviest Things Mankind Has Ever Moved appeared first on Security Scale Service, Inc..