Now thats an odd place.  

Very cool footage and what an extraordinary landscape.  

Nice video.
That river of rocks is nice.

Montfrooij Posted at 6-23 23:21
Nice video.
That river of rocks is nice.

Nearly whole Vitosha mountain is built by those rocks and then covered by soil and where the wind and/or water washed out the soil those "rivers" appear - very common up there

alex_markov Posted at 6-24 02:01
Nearly whole Vitosha mountain is built by those rocks and then covered by soil and where the wind and/or water washed out the soil those "rivers" appear - very common up there

It is very cool to see!

That's a cool feature , I wonder how it came to be ?

very smooth!