Since 1930s, while pioneering in the jungles of Costa Rica to the banana plantations.
those workers have come across dozens of stone balls of various sizes, many children have a spherical shape. Size also varies
, ranging from tennis balls to the balls with a diameter of 8 feet, weighing up to 16 tons.
obvious that marbles are not born naturally. But the hands of humans. The problem is not the human hundred neighboring even less. I even found a piece of pottery fragments. It is unlikely to be a man. The giant ball is spherical
giant ball from the assumption that these will occur before a man was born. Is formed in the Cretaceous, which for over 40 million years ago, they would make it. Made with the intention either. And more importantly, what are the tools or technology made marbles. Protrusions to be resurfaced? No one knows