Horní Heřmanice – Megalithic circle

As Czechs (or Moravians and Silesians), we are convinced that we are largely of Slavic origin with some admixture of various ethnicities that lived here in the past, or that we were genetically influenced by the passage of some warriors.
However, it is said that this is not the case in reality. It is considered that, in reality, the ice population has not changed much since the end of the last age, so there are not only Slavs, Germans...