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Carved stone balls found across Bosnia are similar to ones found in Costa Rica. 390 stone balls have been found in Costa Rica, all finely finished. People who found them said they are always found in groups of three in a triangle & always in the North-South direction, generally found on hills. No one knows how many of these stone balls exist in Bosnia but the number found to date may represent a small fraction. The Bosnian balls have been buried & accidental findings are bringing them to light.