The village of Beli Plast in Bulgaria has a very specific natural phenomena. There you can find a huge stone mushrooms. There is a dozen of those strange looking ?mushrooms? in Beli Plast and they are limestone boulders. The largest of them is three meters height. Those mushrooms were created as an consequence of erosion caused by water during thousands of years in the past. Now when water has disappeared from this area, those eroded lime stones became pretty interesting natural phenomena for visitors and tourists.