The Great Walls of China

by Sean McLachlan on


There was more than one Great Wall of China, a Chinese archaeology team has discovered.

Several portions of the wall are actually double, triple, or quadruple walls running closely parallel to one another. This was a common feature in many ancient fortifications because it made the position harder to take. Often the troops would be garrisoned between the walls for protection against surprise attacks from the rear. The land between the walls also offered a protected area for flocks and farmland to provision the troops.

The Chinese team found that the main wall was larger than the others. The investigation continues.

Several walls were originally built starting in the 5th century BC or perhaps earlier. Under the Emperor Qin Shi Huang in c.220 BC, the earlier scattered walls were linked together to make a continuous fortification to protect China from nomadic tribes to the north. The Great Wall was lengthened, added to, and rebuilt several times in later centuries. During the Ming Dynasty (1368–1644) there was a major expansion during which 5,650 km (3,511 miles) of wall were built. A recent survey found the entire wall, with all of its branches, runs for 8,852 km (5,500 miles). This figure will have to be reassessed now that parallel walls have been found.

[Photo courtesy Francisco Diez]

Brochs: the prehistoric castles of Scotland

by Sean McLachlan on


In Scotland, the past is still very much present. In rural areas you can hear people speaking Scots Gaelic or Lowland Scots like their forefathers did. There are castles and stone circles all over the region. The most enigmatic remains from the past are the brochs.

Brochs are mysterious drystone towers dating to around two thousand years ago. Built without mortar or nails, they’re architectural wonders, yet nobody is sure what they were for.

The best example surviving today is the broch of Mousa, pictured above in this photo courtesy Wikimedia Commons. Built around 100 B.C., it still stands to its original height of 13 meters (43 ft). A stairway cleverly constructed inside the thick wall spirals up to the top, where a walkway offers a beautiful view of the surrounding countryside.

Archaeologists used to think brochs were fortresses, a sort of prehistoric castle. This idea has given way to theories that they were homes of the elite or even simple farmhouses. This former archaeologist thinks the original theory is more likely. To me they feel like forts, and are far more imposing than the standard homes of the day. Plus in Lowland Scots the word brough means fort. In Old Norse, the language of the Vikings, borg also means fort. The Vikings reused some brochs as fortified bases from which the ransack the countryside. Many brochs have earthen ramparts around them, or are located on easily defensible spots such as beside a cliff or on an island in a loch.

%Gallery-130017%It’s hard to say how many brochs there are in Scotland because archaeologists argue over which sites are brochs and which aren’t. Estimates vary from barely a hundred to almost six hundred. Most are clustered in the far north, especially on the windswept Shetland and Orkney islands. Researchers can’t agree on when they were built either. Most agree it was from about 500 BC to 200 AD, but they can’t get more precise than that. This was the Iron Age, when competing tribes fought over land and crafted elaborate weapons and jewelry.

Perhaps the oldest known broch is being excavated right now. A broch at Nybster in Caithness may date back to 500 or even 700 BC, although it’s unclear if these early walls constituted a broch or if the broch was built on top of it. Prince Charles visited the excavation this week. Charles studied archaeology at university and has even gotten the royal hands dirty on several excavations.

All this academic debate just adds to the mystery. Located in the rugged far north of Scotland, often in remote areas, they can’t fail to impress. The sheer effort and skill required to build them in such a hostile environment commands respect.

They have more mysteries to offer up too. Inside there’s often evidence for rooms, floors, or other structures, but none have survived in good enough shape to show what they were used for.

To learn more about brochs and ancient Scotland, check out the BBC’s Mysterious Ancestors website.

The best views of Oxford, England

by Sean McLachlan on


Oxford is the most beautiful city in England. Its famous “dreaming spires” have inspired generations of writers, poets, and scholars. The problem is, there are only two easily accessible spots to get appreciate Oxford’s skyline at its best.

This photo shows the Radcliffe Camera, part of Oxford University’s Bodleian Library and where I work when I’m not feeding hyenas in Harar, Ethiopia. I took this from the top of the spire of the University Church of St. Mary the Virgin. The tower and spire were built between 1280 and 1325 and are the oldest parts of the church. It’s covered in ornate Gothic carvings and leering gargoyles so don’t forget to take a photo of the exterior before entering the church gift shop and buying your ticket to go up!

The stairs are steep and the staircase is narrow. If you are not reasonably fit do not try to go up. Once you huff and puff your way to the top, you’ll be treated to a 360 degree view of Oxford–its churches, its famous colleges, and the green countryside beyond. You’ll also see the gargoyles up close and personal. The nice folks at the gift shop will give you a free map showing you where everything is. After five years living part time in Oxford I still can’t name all the colleges!

%Gallery-122796%Once you come back down be sure to visit the rest of the church, most of which dates to the 16th century and features some beautiful stained glass. There’s also a cafe serving tasty and reasonably priced food and coffee. There’s something soothing about sipping a mocha under medieval arches. If the weather is good, you can sit in the garden and enjoy views of the Radcliffe Camera and All Souls College.

An even more interesting and much easier climb is up the Old Saxon Tower of St. Michael at the North Gate. While it’s not as high as the spire of St. Mary’s, it’s the oldest building in Oxford. It dates to the late Saxon times and was built around 1040. This used to guard the city gate of Oxford, but all that’s left is the tower. Climbing up here you’ll see a little museum filled with medieval and renaissance bric-a-brac, including a raunchy church sculpture I’ll blog about later. On one landing is an old clockwork mechanism. If you put 20 pence in it, the gears grind to life and chimes start to play. The last time I climbed this tower with a kid I spent a whole pound on it!

Peering over the parapet you can watch shoppers stroll along Cornmarket St., Oxford’s busiest pedestrian road, and you can see birds wheel and soar amidst the spires of nearby colleges. The 13th century church downstairs is worth a look for its rare medieval stained glass and a font that William Shakespeare stood next to as his godchild was baptized. It was the kid of a local innkeeper, and I hope The Bard got a few free pints for his trouble!

If you know anyone who works at or graduated from Oxford, try to get into their college and climb up one of the towers. While most colleges are open to visitors for at least part of the year, the “dreaming spires” generally aren’t, so you need an insider to gain access.

Bamburgh Castle excavation reveals Anglo-Saxon building

by Sean McLachlan on


An excavation in the courtyard of Bamburgh Castle has uncovered an Anglo-Saxon hall, the BBC reports.

It was already known that there was a castle here from the 6th century AD, when England was a patchwork of small Anglo-Saxon kingdoms. The kingdom of Northumbria was the largest and one of the most powerful. Little was known about the Anglo-Saxon period at Bamburgh, however, because of the massive later castle built atop it.

Now archaeologists have discovered a hall, perhaps a grand building used by the local ruler. The excavation will be featured on the next episode of Time Team, aired in the UK on Channel 4 this Sunday, April 24, at 5:30 PM. The Bamburgh Research Project has an interesting blog to keep you up to date about the excavation. They also offer a Dig for a Day program where you can learn what it’s like to be an archaeologist and maybe make a major discovery of your own.

A couple of years ago we chose Bamburgh Castle as one of the ten toughest castles in the world because of its amazing military history. Check out the link for more information.

[Photo courtesy George Ford]

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Archaeologists discover “Great Wall of Vietnam”

by Sean McLachlan on

Archaeologists in central Vietnam have discovered what locals are calling the “Great Wall of Vietnam”, The Korean Times reports.

The wall is up to 4 meters (13 ft.) high in spots and stretches for 127 km (78 miles). While parts of it are an earth embankment instead of a stone wall, it’s still a major engineering feat and the longest monument in Southeast Asia. It’s almost as long as Hadrian’s Wall, the old Roman barrier between England and Scotland, and like Hadrian’s Wall has forts at regular intervals along its length.

Hiking Hadrian’s Wall is an awesome experience and has become increasingly popular in recent years. Perhaps Vietnam will add a Great Wall hike to the many attractions that draw tourists to their country.

Unlike its more famous namesake, the Great Wall of Vietnam is fairly recent. It was started in 1819 by order of the Emperor Gia Long of the Nguyen Dynasty, pictured here. It separated the lowlands from the northern mountains and was used not only for defense, but also to regulate trade.

[Photo courtesy Ledinhlong via Wikimedia Commons]