Tara and Lim rivers, two major sources of the Dinaric river system, originate on the northern borders of the Accursed Mountains. The Vërmosh originates in the northwest mountainous part in Montenegro, close to the border with Albania. As a tributary of the Drina it drains into the Danube and then into the Black Sea. The Lim flows through the Plav lake. The Ibar, which originates on the slopes of the Hajla, takes a similar route into the Danube via the West Morava in Serbia. In the southern Accursed Mountains, the Drin dominates. It drains most of the ranges with its tributaries and when measured from the source of the White Drin in Radavc to the mouth of the Drin near Lezha, it is long. However, not all of the Drin flows near or parallel to the Accursed Mountains. One Drin tributary is the Valbona, which drains into the Adriatic Sea, and its eastern tributary the Gashi River. To the west of the mountains is the Cem, which drains the northwestern part of the Montenegrin-Albanian border area to the Adriatic. Water levels fluctuate because the karst topography drains the water underground. Some rivers or streams, such as Përroi i Thatë in Albania, dry out completely during the summer droughts. Although the Peja Bistrica in Kosovo is short, it is very powerful and carved the Rugova Canyon. There are about 20 small alpine lakes of glacial origin in the Accursed Mountains. Many lakes are in the Bogiçevica border area between Kosovo and Albania and the Buni i Jezercë trough near the Jezerca and Bojs peaks. Some lakes, such as Lake Liqenat in Kosovo and Hrid Lake in Montenegro, are tourist attractions. Hrid Lake is a clear example of a well-preserved glacial relief. In the Pleistocene period this was a collection area for ice that fell down over steps of rock from surrounding peaks, dragging with it heterogeneous material. Precipitation washed away smaller rocks, but larger ones remain on the southwestern and western lake shore. The lake is long, wide and about deep on average. In addition to precipitation, it receives water from sources near its shores. The largest lake is Lake Plav in Montenegro. The lake lies at an altitude of above sea level in the Plav valley, nestled between the Accursed Mountains and the Visitor range. Waterfalls are found in some parts of the range. The White Drin Waterfall in Kosovo