Vampire dugout - Credit: Wikimedia Commons
The Vampire dugout (known locally in Belgium as the Vampyr dugout), is a First World War underground shelter located near the Belgian village of Zonnebeke. It was created as a British brigade headquarters in early 1918 by the 171st Tunnelling Company of the Royal Engineers after the Third Battle of Ypres/Battle of Passchendaele. Read more on Wikipedia
Source: en.wikipedia.org