Not just the old mines can be dangerous

Old mine workings may be hazardous and we should be especially careful, that's probably clear to everyone.

But fact that we have to be careful at every step even when moving in the woods, so it probably is not. I was Very surprised that I almost stepped on this:

Antitank missile Panzerschreck

info about the missile : http://en.wikipedia.org/wiki/Panzerschreck