Nobody knows what it is. But there's some big pieces of stone being excavated. I was very careful in the Knar valley to not excavate anything - for fear of future criticism - and everything I removed from the site - portable carved stones etc - I did try to scrupulously record. But the finds are studiously ignored. I didn't find anything at the Knar that I would think could upset anyone's pet theory. I found an observatory - ruined - but that had been hypothesised by Dr Thom. I found a single-tailed long cairn but three-tailed examples are known from the north of the county. But the stuff coming to light in Bosnia is unlike anything else known. There are big stones, laid, and flagged platforms, with an early kind of cement between. Just take a look at the Bosnian stone balls - what are they about - and how do they fit into any coherent theory ?