Image 1 of 21
20 Photos of the World’s Biggest Sinkholes
A sinkhole is a natural depression or hole in the Earth’s surface caused by natural movements in the earths crust. These sinkholes happened throughout history and still happen today that can cause mass destruction or appear naturally beautiful in the world. Of course not all sinkholes are large, some come in much smaller scale – but these sinkholes are known throughout the world as natural wonders.