AS LONG AS 16 centuries ago, the natives of southwestern Costa Rica made a variety of solid stone spheres, some as small as four inches [10 cm] in diameter and others up to eight feet [2.4 m].
कुछ इतने छोटे कि उनकी चौड़ाई दस सेंटीमीटर है, तो कुछ इतने बड़े कि उनकी चौड़ाई २.४ मीटर है ।