Boybuloq (Vishnevsky – Boybuloq cave)
There remain just some 70 m of distance between Boybuloq and Vishnevsky caves. When this passage will be passed, the united system of both caves will be the third deepest cave in the world with a depth of 2033 m and a length of some 25 000 m.
Alternate names, parts of the cave system
Map of the site
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This cave system has formed in the Upper and Middle Jurassic limestone. The limestone layer is 200-350 m thick – but it is oblique. The cave has formed (and continues to be formed) through the process of condensation.
The cave system currently (July 2022) consists of two closely located and, most likely, linked caves: Boybuloq and Vishnevsky Cave.
Boybuloq is a narrow cave with oblique passages that in some places turn into vertical, up to 30 m deep pits and then again continue as narrow passages. The entrance is at the height of 1670 m (2.). In some places, the cave passages are just 20 cm wide. At the same time, the passages are continuously meandering. This combination makes the cave dangerous – others can not help to someone who gets stuck in the narrows or falls into narrow pits. Thus, a speleologist who happened to fall and broke both legs had to crawl out of the cave on his own because no one could efficiently help to move him (1).
Upwards from the main entrance the cave passages go 272 m high. At this height, the passages become too narrow to pass, but the strong air current shows that it is connected to another – Vishnevsky Cave.
This cave got its name from a well-known Russian speleologist Aleksandr Vishnevsky (1955-2015). He was one of the explorers of Boybuloq.
In general, Vishnevsky Cave is somewhat more spectacular than Boybuloq. It has an impressive 90 m tall chimney “Lucas Baldo” as well as nice cave formations inside. This is an alpine cave – the entrance in the cave is located at the height of 3,522 m and the climate at its entrance is harsh.
Potential for a single system
Physically both caves are connected but the passage between them is too narrow for a person to squeeze through it. Thus, formally these are two separate cave systems… for now. There is a possibility that a passable gallery will be found in the future.
Boybuloq and Vishnevsky Caves are located in a very suitable, rare geological formation: a thick limestone layer that, thanks to tectonic processes, is oblique. In most cases, the limestone layers are horizontal and rarely reach the extreme thickness of 2 kilometers. The current world’s deepest caves – Veryovkina Cave (2,212 m) and Krubera Cave (2,197 m) – have formed in such thick layers. Most likely, further research of these world-record holders will not make them much deeper because the full thickness of the limestone layer has been reached (or, almost reached).
The geological formations in Uzbekistan, around Boybuloq, though, offer a theoretical possibility of deeper caves.
The name of the cave, Boybuloq, could be translated from Uzbek language as “a rich source”. This enormous cave, indeed is a source of clean water: after rain a stream flows from it that is of huge value to the the nearby ancient village of Dehibolo.
Thus, local people knew about the existence of the cave since ancient times.
- April 1971 – the cave got a tragic fame among the locals of Dehibolo after a local farmer Mustafo Holmominov disappeared in it. He was an avid, enthusiastic explorer of this cave but (as investigated by other speleologists later), after his lantern went out, he lost the way out, fell in a 27 m tall pit, and, most likely, died due to the fall. His lantern still stands above this pit.
- August 1985 – speleological research started after the Russian speleologists learned that in this region are found deep caves. Speleologists from Ekaterinburg in this year entered the cave and found the remains of Mustafo. The cave itself was deemed to be a promising find and further expeditions took place in the following years.
- 1989 – a joint Soviet-Italian team explored the passages up to the total depth of 1,310 m and in 1990 the next expedition expanded the depth to 1,376 m.
- 1991 – 1992 – was reached the height difference of 1,415 m.
- 2007 – 2021 – almost every year there are expeditions to Boybuloq, gradually expanding the network of the known passages.
There was a hope to find a link between Holtan-Čašma spring and Boybuloq – this height difference would make Boybuloq the deepest cave in the world in these times. The spring was dived up to 170 m far, reaching unpassable passages.
- 2015 – speleologists searched for the entrance in the passages above the Boybuloq. They discovered several caves and the most promising was code-named ČB-15 (Chul Bair 15) at the height of 3,522 m. Later this cave was named Vishnevsky Cave to commemorate the outstanding speleologist who deceased in this year.
- 2016 – a joint Russian-Italian expedition researched Vishnevsky Cave and got a conviction that this cave is headed towards Boybuloq and might form a single system with it. Vishnevsky Cave was researched to the depth of 234 m and length of 1,089 m.
- 2017 – Vishnevsky Cave was researched to the depth of 586 m and a length of 2,800 m.
- 2019 – more spectacular passages and pits were discovered in Vishnevsky Cave and the explored depth of this cave reached 1,131 m and length of 8,004. Thus, even without the prospective connection to Boybuloq it was a very impressive cave! Only a 200 m of horizontal distance and 50 m of vertical distance divided Vishnevsky Cave from Boybuloq.
- 2021 – the researched depth of Boybuloq reached 1430 m and the cave length – 15 212 m. The distance between Boybuloq and Vishnevsky Cave was further decreased to mere 70 m – but the connecting passage was too narrow to pass through it.
Let’s wait for the results of next expeditions!
Uzbekistan is a comparatively dry, mostly desert covered land very far from any sea… and this is one of the reasons why this country has such an amazing cultural heritage!
For millennia Uzbekistan has been crossed by trade routes uniting prehistoric, ancient and medieval cultures of Eurasia. For a shorter route caravans had to cross inhospitable deserts and no one could afford to miss the oases in Uzbekistan. Here, at the crossroads of diverse cultures and wealth developed rich and sophisticated cities, such as the glorious Samarkand, Bukhara and Khiva.
Every year there are reported exciting discoveries of new caves and discoveries of new qualities such as cave paintings in the ones known before. But there still is a feeling that our knowledge covers just a small part of all these monuments of nature.
Though, those which are known to us, offer a surprising diversity of unusual features and impressive sights.
Any other continent (and part of the world) seems small if compared to Asia. This refers also to natural and man-made heritage: in Asia are not just thousands of great landmarks, here are found landmarks created by thousands of diverse cultures from ancient Phoenicians to the mysterious small people in the Philippines and eastern islands of Indonesia.
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