Pretty interesting read...
http://www.bbc.co.uk/news/magazine-13630203
http://www.bbc.co.uk/news/magazine-13630203
Archaeologists are beginning the most detailed ever study of a Western Front battlefield, an untouched site where 28 British tunnellers lie entombed after dying during brutal underground warfare. For WWI historians, it's the "holy grail".
The privately-owned land in the sleepy rural village of La Boisselle had been practically untouched since fighting ceased in 1918, remaining one of the most poignant sites of the Battle of the Somme.
When most people think of WWI, they think of trench warfare interrupted by occasional offensives, with men charging between the lines. But with the static nature of the war, military mining played a big part in the tactics on both sides.
The idea of digging underneath fortifications in order to undermine them goes back to classical times at least. But the use of high explosive in WWI gave it a new dimension.
Patches of untouched virgin battlefield are rare. Most have been ploughed over, cleared or developed, and private landowners have been reluctant to hand them over for research.
It's a site of huge strategic importance. When the British launched the bloody Battle of the Somme on 1 July 1916, La Boisselle stood on the main axis of the attack.
Of the 1.5m total casualties in the four-month campaign, 420,000 British soldiers were killed, wounded or missing having gained just two miles - a loss of two men per centimetre.
Fellow historian Peter Barton says La Boisselle is the "holy grail" for historians, containing the "complete evolution" of trench warfare.
"The site has got both sides of the line and the fourth dimension of underground warfare, making it a truly holistic project," he says.