Opuvani Do
The Opuvani do (Serbian: ''Windy valley'') is a sinkhole at the northern slope of the Velika Jastrebica in the Orjen mountain range located in Montenegro. It creates a major refugium to arcto-alpine and alpine biota in a region with warm winters. As the 60 m deep sinkhole is prone to cold-air pooling, frequent freeze-thaw cycles create favourable conditions for periglacially formed features (i.e. solifluction, periglacially patterned ground). The sinkhole is at 1584 m elevation and consists of 4 interconnected sinks. The major sink is laterally elongated, 440 m long. The outflow of the cold air is at 1647 m and the depth of the basin atmosphere is 63 m. In 2020, a relict population of the Alpine salamander (''Salamandra atra'') was reported from the sink, which fills a 200 km wide distribution gap in the species range. Topography and Geology The Opuvani do is on Mt Orjen on the Bijela gora, which is part of the High Karst nappe. It is formed of Triassic-Paleogene shallow w ...
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Montenegro
) , image_map = Europe-Montenegro.svg , map_caption = , image_map2 = , capital = Podgorica , coordinates = , largest_city = capital , official_languages = Montenegrin , languages2_type = Languages in official use , languages2 = , ethnic_groups = , ethnic_groups_year = 2011 , religion = , religion_year = 2011 , demonym = Montenegrin , government_type = Unitary parliamentary republic , leader_title1 = President , leader_name1 = Milo Đukanović , leader_title2 = Prime Minister , leader_name2 = Dritan Abazović (acting) , leader_title3 = Speaker , leader_name3 = Danijela Đurović , legislature = Skupština , sovereignty_type = Establishment history , established_event1 = Principality of Duklja , established_date1 ...
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