Signs for mine fields?

[stengaard]

Hi Guys.

We have a problem with IDíng these signs.

They were found inside a German bunker.

But are they German? And what could they mean?

We think they might be signs for German mine fields????

So please help!

Best regards
Stengaard

[Wilhelm]

The word "Minen" is not there. As well as "Achtung". I don't think they are mine warning signs. What is a backword "S" anyway? Good luck.