FF 537
Famous findMost made between about AD 800 and 1500
The Diquís Spheres: banana workers bulldozing a Costa Rican jungle uncovered hundreds of perfect stone balls
In the 1930s workers clearing jungle for United Fruit Company banana plantations in the Diquís Delta of southern Costa Rica found hundreds of nearly perfect stone spheres, some over two metres across. Made between about AD 800 and 1500, their purpose is still unknown.