Waiting in Bulgaria

So right now we're stuck in a Bulgarian traffic jam. Not sure just yet what is causing the pile up big we're not really moving at all. So far we've crossed into Bulgaria from Greece and we visited the town of Melnik which is famous for its family made wines. It looks like the town had been recently washed out by a flood, as the road was in poor condition and everything was a bit muddy. However it didn't look like anybody was in a rush to fix anything up. The shops and hotels themselves looked in fairly good repair but the public roads were just filled with rocks and mud. We didn't stay long as it didn't seem very vibrant there and instead we are heading up to Rila (which is where we're stuck in the traffic jam).