Boybuloq

Boybuloq
Boy-Bulok, Boj-Bulok
Cave entrance
Map showing the location of Boybuloq
Map showing the location of Boybuloq
LocationDehibolo, Uzbekistan
Coordinates38°23′04″N 67°30′06″E / 38.384470°N 67.501690°E / 38.384470; 67.501690
Depth1,517 metres (4,977 ft)
Length18,400 metres (60,400 ft)
Elevation2,647 metres (8,684 ft)
GeologyJurassic limestone[1]
Entrances2

Boybuloq (also known as Boy-Bulok and Boj-Bulok,[a] Uzbek: Boybuloq, Russian: Бой-Булок) is a limestone cave in Uzbekistan, the deepest cave in Central Asia and all Asia except its western part. The cave is 1,517 metres (4,977 ft) deep and 18,400 metres (60,400 ft) long with the main entrance at an elevation of 2,647 metres (8,684 ft). It is situated at the edge of Baysun-Tau mountain ridge, the southern spur of the Gissar Range, in the southeast of the country. The nearest village is Dehibolo (Дюйбало in Russian), to the northeast of Boysun.[2][3][4][5][6][7]

The cave developed in the covered karst of Upper and Middle Jurassic limestones, in monoclinal strata, in the preserved wing of an anticline. The thickness of limestone strata is from 200 to 350 meters. Contrary to most limestone caves it was not formed by water precipitation penetrating from the surface but, as the soluble rock is covered by insoluble strata, by condensation.[1] Hence the cave consists mainly of very narrow passages which descend along the incident angle of strata, from time to time interrupted by vertical shafts, no deeper than 30 metres (98 ft), and ends with an impassable siphon.[4]

It was explored by Russian cavers since 1984, in the framework of Ekaterinburg Speleo Club (SGS) and the Assoсiation of Ural speleologists (ASU), with the participation of cavers from Italy, Great Britain, Slovakia, France and Switzerland (in chronological order).[8][9]

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