Prehistoric balls may have built Stonehenge

by Sean McLachlan on


There have been a lot of theories over the years about how Stonehenge was built. Moving massive stones ranging from 4 to 45 tons over hundreds of miles isn’t easy in modern times, and certainly was a challenge 4,500 years ago. The two leading theories–log rollers and wooden sledges greased with animal fat–both have detractors. Many archaeologists believe rollers would have left deep scars in the landscape and one can be found, while reenactments with sledges have shown it would take hundreds of people to move the largest stones.

Now National Geographic reports a new theory. British graduate student Andrew Young thinks grooved wooden rails fitted with stone balls would have made an easy surface on which to move the stones. The balls acted like ball bearings and giant stones could have been pulled along on top. He tried it out with a team of seven people and found they could easily move a load of four tons. Only a relatively short length of track would be needed because the rails and balls could be pulled up once the stone passed and placed at the front.

He got the idea by studying mysterious stone balls found near stone circles in Scotland. They didn’t appear to have any purpose until he noticed they’re all exactly 70mm (3 inches) in diameter, suggesting they were part of some greater mechanism.

It’s an interesting idea, but this former archaeologist isn’t convinced yet. No stone balls have been found in England. Young says old-growth wood could have worked just as well and wouldn’t have survived, and that’s possible, but civil engineer Mark Whitby told National Geographic that the biggest stones in Stonehenge would have crushed the balls into the tracks. A larger-scale demonstration is being planned to study this issue.

Generally the KISS method (Keep It Simple, Stupid) points to the most probable solution. Wood was plentiful and making smooth rollers out of tree trunks would have been the easiest solution. Rollers and a bunch of strong prehistoric Britons, helped by teams of oxen, would have been the cheapest and least technologically demanding way to move the stones. While this would have left marks on the land, it’s an open question whether they’d still be visible after 4,500 years of weathering.

The KISS method also explains why aliens didn’t build Stonehenge.

The balls idea is still worth investigating, and considering that Young has come up with such an innovative and perhaps correct answer to a major archaeological mystery while still a PhD student in biosciences hints that I’ll be writing more about him in the future.

[Photo courtesy Mister Rad via Gadling’s flickr pool]

Yet another wall collapses in Pompeii

by Sean McLachlan on

Here we go again.

In the fourth incident in a little more than a month, a wall in the ancient Roman city of Pompeii has collapsed, Discovery News reports.

The garden wall surrounding the House of the Moralist, a popular stop for visitors, has toppled. Site managers say heavy rains caused the terrace around the wall to slide down, pushing over the walls. These walls were completely restored after being bombed in World War Two, so while the stones are Roman the workmanship is actually only sixty years old. With many of Pompeii’s walls being 2,000 years old, one wonders how many more disasters we’ll see.

Trouble started when the House of the Gladiators crumpled in November. Earlier this month two walls fell down. UNESCO is now investigating the problem at the World Heritage Site.

The House of the Moralist gets its name from some pithy advice painted on the dining room wall.

“Wash your feet, and a slave will dry them. A cloth covers your couch; keep it clean!”

“Do not flirt with another man’s wife. Watch your language.”

“Don’t fight or argue. Otherwise, go home.”

These rules wouldn’t be out of place on the walls of some youth hostels I’ve seen.

So far nobody has been injured in the incidents, but several of the ancient walls line narrow streets often filled with visitors. Imagine what would happen if one of the walls in this photo fell down during opening hours.

[Photo courtesy user fisticuffs via Wikimedia Commons]

UNESCO studies Pompeii troubles

by Sean McLachlan on


A UNESCO team has arrived at Pompeii to investigate the recent collapses of ancient walls and buildings, All Headline News reports.

Two Roman walls collapsed earlier this week, and in November the House of Gladiators fell down. Authorities blame heavy rains but there’s a growing controversy over the lack of maintenance at the site.

The Roman city was buried in ash during an eruption of Mt. Vesuvius in 79 AD. The ash kept the city remarkably preserved, making it one of the world’s top archaeological treasures.

The team will study the site and give suggestions as to how to preserve it, but the investigators have made clear that it is Italy’s responsibility to do the work. The Italian government has created a task force of archaeologists, craftsmen, and architects to shore up the walls and buildings. Considering that the last conservation project at Pompeii is under investigation for mob connections, it remains to be seen how effective this new task force will be.

[Photo courtesy user Alago via Wikimedia Commons]

Human castles may make UNESCO World Heritage list

by Sean McLachlan on

You gotta love Spain. Not only do they like having giant tomato fights and getting chased through the streets by bulls, but they build giant castles out of people.

That’s right. Not content with having some of the best castles in Europe, the Spaniards like constructing living towers up to ten people high. Called a castell, the tradition originated in the region of Catalonia in the 18th century.

A bunch of strong, big castellars make up the pinya (base) and support their teammates as they create level upon level with progressively fewer (and lighter) people. Once a level is complete, the people who make up the next one climb up the backs of the others and take their place. Then the top person, called an enxaneta (rider) climbs all the way to the very top and, supported by only two people, raises a hand with four fingers up to symbolize the Catalan flag. The enxaneta and the very top levels are often made up of children to lighten the load on the bottom levels. Then the castell disassembles itself from the top down by each level climbing back to the ground. Only when everyone is safely back on the ground is the castell considered a success.

It’s an unusual tradition and now the castellars are applying to get their art on UNESCO’s list of “intangible world heritage”. The list includes examples of rare cultural practices that are relatively unknown and unpracticed outside a certain region. Check out the website for more bizarre and amazing practices around the world.

Controversy over development near Victoria Falls

by Sean McLachlan on


Environmentalists are complaining that the tour company Shearwater Adventures has violated national and international law by expanding their luxury resort into the rainforest near Victoria Falls, Zimbabwe.

Shearwater has constructed a new restaurant, bar, kitchen, and information center next to the public entrance to the World Heritage Site. A lawyer for Shearwater insists the development is a legal replacement of earlier structures that had fallen into disrepair and that none of the new buildings go outside the area already reserved for facilities. Opponents to the construction contend that the buildings are on a much larger scale than the previous ones and are forbidden by a 2007 moratorium. This was put in place after UNESCO threaten to rescind Victoria Falls’ World Heritage status after a local businessman tried to build a hotel and golf course in the World Heritage zone.

Without being on the ground it’s hard to say if who’s telling the truth here. Last week The National Museums and Monuments of Zimbabwe ordered that no new construction take place. It is now running the site along with the National Parks and Wildlife Management Authority, which used to have sole authority. The government is currently trying to decide which body will run the Falls.

As this shakeup is going on, conservationists say Shearwater is planning a giant $6 million development next to the VIP entrance to the Falls. This will include a complex of buildings close enough to the Falls to threaten its World Heritage status. There’s also worry about the development’s location only a few yards from the Zambezi River.

[Photo courtesy user colmdc via Gadling’s flickr pool]