Tiles motif represent oldest European astral calendar from 2600 BC - Vučedol astral calendar based on Orion constellation <a class="external free" href="https://en.wikipedia.org/wiki/Vu%C4%8Dedol_culture#Astral_calendar">https://en.wikipedia.org/wiki/Vu%C4%8Dedol_culture#Astral_calendar</a>
<a href="//commons.wikimedia.org/wiki/User:Mnalis" title="User:Mnalis">Mnalis</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>