The Hidden World of WWI is more than a collection of fine-art photographs or even a major historical discovery; it is really a story about people who lived and created and expressed their innermost humanity in the Hidden World while chaos reigned above. Our social media pages offer a meeting place for those who want to learn more and contribute to the story.

Follow us on social media to see a new photo from the Hidden World every day throughout the five years of the WWI Centenary.

The incredible personal inscriptions, carvings, signs and plaques in the Hidden World are truly treasures for the ages. While we will not divulge their locations, it is possible that some people may know where some of them are and seek to see them first-hand. This is a bad idea. Almost all of these underground treasures are on private land. Many of the sites are extremely dangerous and inexperienced explorers could be hurt... or worse. Others may want to steal or even deface this priceless heritage. For all of these reasons, The Hidden World team invites the world to help us leave a legacy for the future and protect these places from harm.

Please share your first-hand knowledge of trespassers, thieves or vandals with us on social media. Visit Facebook.com/HiddenWWI to find out how.

I have photographed the names of hundreds and hundreds of soldiers inscribed on the walls of the Hidden World. The Hidden World team would be delighted to hear personal family stories that soldiers may have passed down about living in the underground cities. We are especially keen to find out who these men were and to learn about their lives. We ask descendants, researchers and students to help us write the stories of these soldiers whose names now lie in complete darkness in the Hidden World. As photographs with the names of these soldiers are posted via social media, please tell the world who these men were with family stories and details about their lives and service during WWI.

Please share whether they were lucky enough to have survived the war and if so, what they did with the rest of their lives. Photographs are welcome. Visit Facebook.com/HiddenWWI to tell your story.