Orongo

Orongo is a stone village and ceremonial centre at the southwestern tip of Rapa Nui (Easter Island). The first half of the ceremonial village`s 53 stone masonry houses were investigated and restored in 1974 by American archaeologist William Mulloy. In 1976 Mulloy assisted by Chilean archaeologists Claudio Cristino and Patricia Vargas completed th....
Found on http://en.wikipedia.org/wiki/Orongo

Orongo

(from the article `Easter Island`) ...have no counterpart elsewhere. Also peculiar to the middle period was a bird cult with attendant birdman rites that survived into the third, or ...
Found on http://www.britannica.com/eb/a-z/o/32
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