Really Big Big THANKS to all !!

I cant identify it because im fooled by the brown spots on the head that are just under the eyes. All the ants in this colony had the same spots.

Thank you so much!! But one "ant man" told me is it Formica rufa group. So?

Hello, can u help me with identification? Size of this worker is about 10mm. The location is in Czech Republic/Prague, on the road near the park forest. Lots of ants, but no anthills nearby.