This is an interesting read:
Order of the Dragon. Notice that in Bosnia there existed a church called 'Ecclesiae Drugunthiae' or 'The Church of the Dragon'.
The
Serbian version is a bit different as it mentions the existence of the order from the late 13th century.
I also found this
picture. It's the coronation of Stefan Dušan as the Macedonian Emperor. I think it's in Skopje. He bore the title "Macedonian Emperor of all Romaioi and Tribali" (Makedonski Car svih Romeja i Tribala).
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Concerning the Dragon and the Bosnian Pyramid of the Dragon, here is something interesting as well. This is the royal emblem of the Kotromanić dynasty (who also took part in the Kosovo battle).
All of the Bosnian kings were coronated on top of the hill of Visočica in a small fortress/temple. Today Visočica is better known as the Pyramid of the Sun.
But check this. This is the picture of the location of the Bosnian pyramids and the exact distance from the top of the pyramids to the others (they form two true triangles, all corners are 30°):
Notice the river Fojnica that goes between them.
Now compare it to the royal emblem of the Bosnian kings:
Just to add that in Slavic mythology Dragon was also associated with rivers and floods. Is there more to the stories than we think?