History teacher finds secret cache of Nazi artifacts hidden behind house wall

The secret cache includes badges adorned with eagles and swastikas, and a portrait of Adolf Hitler.

Researchers say the building was once a local office of the NSV, a Nazi welfare agency that distributed gas masks, among other tasks.

(Image credit: Stadtarchiv Hagen)
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Tom Metcalfe is a freelance journalist and regular Live Science contributor who is based in London in the United Kingdom. Tom writes mainly about science, space, archaeology, the Earth and the oceans. He has also written for the BBC, NBC News, National Geographic, Scientific American, Air & Space, and many others.