Scientist have found a second pyramid hidden deep within the Kukulkan pyramid at Chichen Itza in Mexico.
원문출처 : http://www.cnn.com/2016/11/17/americas/chichen-itza-pyramid-discovery/index.html
원문출처 : http://www.cnn.com/2016/11/17/americas/chichen-itza-pyramid-discovery/index.html