Otoka originated this year as well
Žabljak sinkhole Island, about three kilometers long, although with a significant delay, it flowed along its entire length this year as well.
Otoka occurs almost every spring, sometimes also in autumn, depending on the hydrological conditions, and it occurs after the "crack of the clods" and the filling of the Black Lake.
The temperature rise of the heavy rain and the melting of the snow, ten days earlier, caused the "crack of the ice".
Scientific research has shown that the "crack of rocks" occurs due to the formation of water accumulation in the interior of Durmitor. When the underground lake reaches a certain level, the water flows into the Black Lake through the permeable rock of Međeda...
This time, it took a week for the Black Lake basin to fill up and Otoka to go on its way.
Otoka sinks near the city stadium.
It has been proven that its waters are a tributary of Tara. Nature has made them flow under the bed of Tara and spring several tens of meters above its right bank. It is a locality with the illustrative name Bijela vrela. The profession has proven that even in the small Black Lake, the water sinks and emerges on the opposite side of Durmitor, near the town of Dubrovsko, and flows into the Komarnica river. The level of the island also depends on the hydrological conditions. In recent history, it is remembered that in September 1974 and December 2010, it reached a water level that led to the fact that the places where it sinks could not accept such a quantity of water. The island continued to flow, overflowing across the road leading to Ćurevac and under the "Planinka" hotel.