stone river called also stone run, stone stream or stone sea on mountain vitosha, near upper aleko’s waterfalls

age aleko briges bulgaria cascade cherni cobble cobblestones creek del erosion falklands fall flowing glacial golden ice kamen landscape material moraines mostove mountain natural nature park peak phenomenon plateaus river rives rock run runs scenic sea sofia stone stonefall stones stream street subalpine tourism travel unique vitosha volcano vrah wallpaper wild wilderness zlatnite