Pile of Rocks

This giant pile of rocks looms over a road in a half-completed neighborhood on Beech Mountain. I'd love to know the story behind them. They seem wholly-unnatural and quite precarious. I can't fathom this is an act of nature but it would have been a pretty risky proposition to stack these giant stones like this, too. And at the top of the neighborhood, they seem ready to break free and tumble down into the homes below at any time. 

This photograph was captured with a Sony a6300.