A few years ago the so-called 'black archaeologists,' people conducting independent excavations in the places of World War II battles and looking for precious war trophies, were extremely active. Sometimes during their search they would encounter very strange phenomena. 
http://english.pravda.ru/science/mysteries/30-10-2009/110207-tomb_raiders-0
http://english.pravda.ru/science/mysteries/30-10-2009/110207-tomb_raiders-0
