Easter Island Mystery Solved? New Theory Says Giant Statues Rocked

[Jennifer Murdoch]

Easter Island Mystery Solved? New Theory Says Giant Statues Rocked
Potbellies might help explain how the moai were moved.




An illustration of ancient Easter Islanders ''walking'' a moai statue with ropes.   

To move each moai, two groups may have rocked it side to side while a rear group kept it upright.

Illustration by Fernando G. Baptista, National Geographic

By National Geographic staff

National Geographic News

Published June 22, 2012

For centuries, scientists have tried to solve the mystery of how the colossal stone statues of Easter Island moved. Now there's a new theory—and it rocks.

The multiton behemoths traveled up to 11 miles (18 kilometers) from the quarry where most of them were carved, without the benefit of wheels, cranes, or even large animals.

Scientists have tested many ideas in the past, figuring that the islanders must have used a combination of log rollers, ropes, and wooden sledges. Now a pair of archaeologists have come up with a new theory: Perhaps the statues, known as moai, were "engineered to move" upright in a rocking motion, using only manpower and rope.

Terry Hunt of the University of Hawaii and Carl Lipo of California State University Long Beach have worked closely with archaeologist Sergio Rapu, who's part of the South Pacific island's population of indigenous Rapanui, to develop their idea. They've observed that fat bellies allowed the statues to be tilted forward easily, and heavy, D-shaped bases could have allowed handlers to roll and rock the moai side to side.

Last year, in experiments funded by the National Geographic Society's Expeditions Council, Hunt and Lipo showed that as few as 18 people could, with three strong ropes and a bit of practice, easily and relatively quickly maneuver a ten-foot (three-meter), five-ton moai replica a few hundred yards (a few hundred meters). No logs were required. (National Geographic News is a division of the Society.)

[Jennifer Murdoch]

See new Easter Island pictures from National Geographic magazine >>

 

In previous efforts to solve the mystery, Czech engineer Pavel Pavel worked with Norwegian explorer-adventurer Thor Heyerdahl and a team of 17 helpers to propel an upright, 13-foot (4-meter), nine-ton moai forward with twisting motions, keeping the statue fully upright at all times. That was in 1986. But Pavel's team damaged the moai's base and had to stop. (Related: "Easter Island Settled Later, Depleted Quicker Than Thought?")

A year later U.S. archaeologist Charles Love and a team of 25 erected a 13-foot (4-meter), nine-ton model upright on a wooden sledge and moved it over log rollers, advancing it 148 feet (45 meters) in two minutes.

(Podcast: National Geographic's Hannah Bloch on Easter Island statue theories.)

Meanwhile, for many of Easter Island's 2,000 or so indigenous Rapanui, descended from the original Polynesian settlers, the answer is simple. "We know the truth," says Suri Tuki, 25, a tour guide. "The statues walked."

Full story: "Easter Island: If They Could Only Talk," from the July issue of National Geographic magazine >>

http://news.nationalgeographic.com/news/2012/06/120622-easter-island-statues-moved-hunt-lipo-science-rocked/

[Jennifer Murdoch]

http://ngm.nationalgeographic.com/2012/07/easter-island/olson-photography?source=news_easter_island_story