@europesays That's a warning sigh noting an area full of #UXO (unexploded ordinance), which is not allowed to be entered or driven through due to being dangerously contaminated with it.
IOW: There is a non-zero risk you die from stepping on or driving over an unexploded shell or mine...
And I do highly recommend to follow that sign and GTFO NOW by making a 180° turn!
testing
testing