In 1983 Laurance Doyle and Eddie Frank led their first expedition to NAMORATUNGA (click for photos)  - an extremely remote site in northern Kenya.   Their findings earned them a  footnote in Archaeo-astronomy history. 

They discovered that around 300 B.C. an unknown African people had built a stone "observatory" using a detailed understanding of the motions of the Stars and the Moon.  With their astronomical knowledge, these people created  a very accurate lunar calendar.

In 1989 Doyle and Frank ventured further south on another expedition to the GREAT ZIMBABWE RUINS (click for photos) which dates back as far as 400 A.D.  This vast complex extends well over an acre, and built within it are significant astronomical alignments.

The articles below chronicle their findings.

Click  for Expedition Photos of NAMORATUNGA & GREAT ZIMBABWE

ARTICLES by Doyle & Frank
AnthroQuest
(The L.S.B. Leakey Foundation Newsletter)
"Astronomy in East Africa"
Current Anthropology
"The Borana Calendar Reinterpreted"
Encyclopaedia of the History of Science, Technology, and Medicine in Non-Western Cultures
"Astronomy of Africa"
SETI News
(
SETI Institute Newsletter)
"Do Dolphins Talk"