:使

Science (New York, N.Y.)
|September 10, 1982
PubMed
まとめ

チャコ・キャニオンの"太陽の剣"という光現象は,チャコア人のアナサジの建造物ではなく,自然に発生した滝である可能性が高い. 石版画は,自然光パターンの観察者によって後に追加された可能性が高い.

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