The circle has a diameter of 30m (98 feet) and comprises 127 stones. Each stone is approximately 4m (13 feet tall) and somewhat irregular in shape.
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There is some evidence that the stones have some astronomical basis, with the shadow of one stone disappearing during the winter solstice. If this is the case, the sophistication of Pre-european civilisations in South America was more advanced than previously thought.
The circle is now in the Parque Arqueológico do Solstício (Solstice Archaeological Park).