Mystery mound in England turns out to be ancient monument

by Sean McLachlan on


England’s prehistoric landscape has a new addition.

Marlborough Mound in Wiltshire has long been a mystery. The flat-topped cone of earth looks like a smaller version of Silbury Hill, pictured here. The bigger mound was finished around 2300 BC at a time when Neolithic farmers were erecting stone circles such as Stonehenge and Avebury. Now archaeologists have taken samples from Marlborough Mound and carbon dated them to 2400 BC.

Carbon dating, which measures decaying carbon isotopes in organic matter, has a slight margin of error that increases the older the sample is. Thus Silbury Hill and Marlborough Mound may have been finished simultaneously, or at least in the same generation. The two mounds are only about 20 miles apart, a day’s walk for a Stone Age farmer or excited archaeologist.

The mound was reused several times. The Romans had a settlement next to it and the Normans built a castle on top of and around it in the late 11th or early 12th century. Early Norman castles were wooden palisades around an artificial mound. In this case their prehistoric predecessors saved them some work. The wooden walls were later replaced with stone ones but the castle has long since vanished. In the 17th century the mound was turned into a garden. The mound stands on the grounds of Marlborough College and is off-limits to visitors. Hopefully that will change now that its true importance is understood.

Robot discovers secret writing in Great Pyramid

by Sean McLachlan on


The Great Pyramid of Cheops at Giza has always sparked the imagination. Among its many mysteries are four tiny passages running through the interior. The smallest are only eight inches square, far too small for a person to crawl through, so what were they for?

As you can see from the cutaway above, two of the tunnels angle up from the King’s Chamber to exit the pyramid. Some researchers believe these have astronomical alignments. Like with all ancient agricultural societies, observing the heavens was important to the Egyptians. The other two tunnels seem not to go anywhere. Some claim they lead to hidden chambers, or allowed the pharaoh’s soul to pass out of the tomb, but nobody really knows. Now a robot has added new pieces to the puzzle by going down one of these tunnels and filming it.

Robots in the pyramids are nothing new. Robotic exploration started in the 1990s, when remote-controlled cameras on wheels rolled up the two lower tunnels, only to find them blocked by strange stone “doors” decorated with a pair of copper pins. One of the doors had a small hole drilled in it, and a new robot with a camera on the end of a flexible cable looked on the other side.

What it found raises more questions than it answers. The secret door doesn’t seem to have any way to open, and on the other side of it are hieroglyphs. Egyptologists are hoping the hidden message will explain one of the pyramid’s greatest mysteries.

Why is there writing where nobody can read it? And why is the back of the door highly polished? There’s also a mason’s mark on the stone that the researchers are puzzling over. Egyptologists are busy trying to decipher the hieroglyphs and are planning more journeys for the intrepid robot. For more on the technology behind the discovery, check out this post on Dr. Zahi Hawass’ website.

These are good times for pyramid studies. A satellite has detected what could be seventeen lost pyramids, and last summer the pyramids of Abusir and Dahshur opened to the public.

[Image courtesy Jeff Dahl]

Lost pyramids found in Egypt

by Sean McLachlan on


You’d think it would be pretty hard to lose a pyramid, yet in fact plenty have gone missing in Egypt over the years. Not all of them are giant edifices like the Great Pyramid at Giza. Most are only a dozen or so meters high and were meant to house the body of a Queen. In 2008 the pyramid of Sesheshet was discovered in the desert near Saqqara, and now a survey using infrared satellite imagery has found up to seventeen more.

The survey was conducted by Dr. Sarah Parcak of the University of Alabama at Birmingham. In addition to the 17 suspected pyramids, the survey yielded more than 4,000 other sites, including tombs and towns. Excavations on the ground have confirmed that two of the suspected pyramids are really there and not just natural anomalies. Hopefully there will be further excavations to uncover the rest.

Infrared imaging is commonly used in satellite surveys because it reveals differences in the ground. Stone or harder soil show up as a different shade than loose soil or sand. This has applications in many of fields, and is turning out to be pretty handy in archaeology too.

[Photo of Queen’s pyramids at Giza courtesy Daniel Mayer. These are not the ones just discovered by the Dr. Parcak and her team.]

Archaeologists in Syria discover Byzantine mosaic

by Sean McLachlan on

Just when you thought all news coming out of Syria was bad, an archaeology team has discovered a Byzantine mosaic in a medieval church.

The mosaic was discovered last week at the Deir Sounbol Church on al-Zawieh Mountain. Syrian investigators say the mosaic measures 4×5 meters (13×16 ft.). While portions are damaged or missing, floral and geometric shapes are clearly visible and there are inscriptions in Greek. These are prayers that include the names of the owner of the church and the person who supervised the creation of the mosaic.

The Byzantine Empire was the eastern half of the Roman Empire. Long after the Western Empire collapsed, the Byzantines continued Roman culture with a distinctive Greek flair. Syria was Byzantine territory and was the battlefront in the Empire’s grueling war with Persia.

The war weakened both sides so much that they were easy pickings when the followers of Mohammed burst out of the Arabian Peninsula in the 7th century. Persia quickly fell, but Byzantium held on, shrinking gradually until the end came in 1453. In that year the capital Constantinople, modern Istanbul, fell to the Ottoman Turks.

One of Byzantium’s greatest achievements were its sumptuous mosaics. Made of little colored tiles called tesserae, they depict elaborate scenes and some have tesserae made of gold. A copyright-free image of the Syrian mosaics was not available. You can see them here. This picture, courtesy of Berthold Werner, shows a mosaic floor in Jerash, Jordan. It’s interesting in that it contains swastikas, a symbol of peace and harmony for centuries before the Nazis twisted its meaning.

I love the fact that Syrian archaeologists are continuing to dig despite the chaos and repression going on in their country. These guys obviously love their work and won’t let anything stop them from doing what they feel is important. It reminds me of a literary journal that was published in Beirut during Lebanon’s civil war. The offices were right next to the no-man’s land between two factions, and yet they still managed to publish literature on a regular basis. The name of the journal escapes me. Any Lebanese out there remember it?

Space tourism celebrates tenth anniversary

by Sean McLachlan on


Space tourism is ten years old this week. On 28 April 2001 millionaire Dennis Tito became the first person to go into space as a tourist and not an astronaut or scientist.

In an interview with BBC today he talked about how thrilled he was and called his eight days being in orbit “paradise.”

While space tourism is the ultimate in high-cost adventure travel–only seven people have done it so far and Tito is said to have paid $20 million for the privilege–private companies are hoping to make it more widely available. They also want to make it more comfortable. Tito was crammed “elbow to elbow” in a Russian capsule after NASA refused to put him on one of the Space Shuttles. Not that he cared at the time. Check out this video of Dennis Tito’s arrival at the International Space Station. The guy’s euphoric!

A number of private companies are looking into commercial space travel. The most serious contender is Virgin Galactic, which has already built a spaceport and put their spaceship Enterprise through a test flight. The company hopes to push an orbital trip down to $200,000, just one percent of what Tito paid. Who knows? Maybe good old free-market competition will push the price even lower than that.

Even more ambitious is Excalibur Almaz, a company based in the Isle of Man that has bought some Russian space capsules that they’re refurbishing. They boast that they’ll offer trips around the Moon by 2015.

Best of luck folks, but I won’t be looking for a Lonely Planet Outer Space in the bookstores anytime soon.

[Photo courtesy NASA]

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