http://www.mountain.ru/article/article_display1.php?article_id=3083

Now we will make our first stop near Uchan-Su waterfall. It is full-flowing in spring and after the rains, and in summer there is almost no water. It is one of the highest in Europe (98 m). It is twice higher than Niagara . In cold winters the waterfall freezes and turns into one big icicle which hangs down from the ledge to its bottom. In 80-th years of the past century the alpinist (“Fantik”, Yu. Lishaev) firstly ascended the frozen waterfall. He noticed that it consists of many separate ice tube filled with water. Such construction is unsafe and can fall any moment.

The waterfall makes river with same name which runs through forest and vineyards and flows into the sea near “Oreanda” hotel.

An interesting fact: in June 1949 a mud-flow on Uchan-Su river carried out to sea more than 1.5 million square meters of ground per day. It made a coastal split with area more than a hectare. Then it was washed out by the sea.

Name Uchan-Su means “Flying water” from Turkic, the Greeks called it “Kremasto-Nero”, what means “black water”.