Interesting article about unexploded shells from WW1. It is believed there are around 500 million still active at the battle of Passchendaele.
http://www.bbc.com/news/video_and_audio/headlines/40768853/uncovering-the-unexploded-shells-of-world-war-one
where is that?
Belgium
@reclaimer good luck
Will they explode if I step on them?
maybe lol