====== Diquis spheres ======

In the 1930's workers from the //United Fruit Company//, who were clearing land in the Diquís Valley Delta region of Costa Rica, began finding large numbers of almost perfectly round stone spheres.

The spheres, which range from a few kilograms up to around 16 tonnes, are accurately made, presumably by chipping.

About 300 have so far been found so far. They have been carbon-dated as between 500 A.D. > 1,500 A.D.

Most are made from diorite, a rock similar to granite.

The reason for their manufacture, their function, and the history of the people(s) who made them is unknown.

More info : [[https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjv6u-w_8LsAhWUtHEKHZ2bDU04HhAWMAR6BAgLEAI&url=https%3A%2F%2Fwhc.unesco.org%2Fuploads%2Fnominations%2F1453.pdf&usg=AOvVaw0UE3sg58a6-7baAM-kaITi|Unesco]] {{:oa_padlock_grn.png?16&nolink|open access}}(.pdf, 600 pages)

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Also see : [[content:history:carved_stone_balls]]