Heyerdahl Thor. Aku-Aku, the Secret of Easter Island

New York: Pocket Books, 1960. — 368 p.Aku-Aku is the fascinating account of a scientific expedition to solve the mysteries of Easter Island. That lonely speck in the Southeast Pacific is dotted with colossal statues of long-eared men — weird relics of a people who have vanished from the earth.
When and how were these fifty-ton giants carved? How were they moved for miles without machinery? How were they erected? What toppled some of them over? And what happened to the men who made them?
To Thor Heyerdahl, famous Norwegian explorer who thrilled the world with his dangerous voyage on the raft Kon-Tiki, this new expedition was to prove even more exciting.
The house-high statues were only part of the amazing secrets of Easter Island. Underground, Heyerdahl found caves guarded by suspicious natives, caves filled with revealing objects and fantastic clues to the skills and customs of the pale-skinned, red-haired "long-ears."