Just read a most interesting article, with many beautiful images at Old European culture blog: the excavation of a tumulus at Danilovgrad showed it was not a Bronze Age Indoeuropean/Kurgan thing but a true dolmen (trilithon) and many centuries older than expected: c. 2400 BCE.
There are thousands of similar tumuli awaiting excavation, most in the same rich area of Central Montenegro. This finding puts the Balcanic country (and probably also neighboring regions of the Western Balcans) fully within the Dolmenic Megalithic tradition in the late Copper Age.
Also an intriguing bronze artifact was part of the grave goods, as well as zig-zag decorated pottery.
