It is formed by Banderitsa and Demyanitsa rivers, which joints about 2.5 km southwest above the town. In the past water have been used as a driving force of many gadgets. The river has flooded the western Bansko many times, but now its waters are curbed by high walls. The name is borne by the fact that when it passes between stones it seems to whisper as if it is casting "voices". Not far from the village of Banya flowing into Iztok River. It is 24.6 km long. The river has uneven outflows, with pronounced spring-summer high water and winter low-water.