Voronya洞穴，也称为Krubera洞穴，是世界上最深的洞穴。
这个名为Krubera Voronya的洞穴被认为是“洞穴中的珠穆朗玛峰”。洞穴通道全长13232米，深度2197米。它位于阿布哈兹（格鲁吉亚）附近的黑海
洞穴入口与其最深探测点之间的高差为2197±20米（7208±66英尺）。2001年，乌克兰洞穴学协会的探险队到达1710米（5610英尺）的深度，比之前已知的奥地利阿尔卑斯山最深的洞穴Lamprechtsofen的深度高出80米（260英尺），成为世界上已知的最深洞穴。
2004年，乌克兰洞穴学协会的探险队在洞穴学史上首次到达2000米（6600英尺）以上的深度，并探索了2080米（-6824英尺）的洞穴。
奥尔托巴拉甘山谷沿着Berchil的背斜山脊延伸，该山脊向西北方向平缓下降。洞穴入口沿背斜山脊排列，但洞穴受纵向、横向和倾斜断层控制，在植物视图中包括复杂的缠绕模式，主要位于山脊区域内和附近。
洞穴主要由浅井和陡峭的蛇道组成，尽管在一些地方，它们在不同的层面上切割出看似古老的化石通道。
Voronya Cave, also known as Krubera Cave, is the deepest cave in the world.
The cave, Krubera-Voronya, is considered the “Everest of Caves”. The total length of the cave passages reaches 13,232 m, the depth is -2,197 m. It is located in Abkhazia (Georgia) near the Sea black
The elevation difference between the cave entrance and its deepest explored point is 2,197 ± 20 meters (7,208 ± 66 feet). It became the deepest known cave in the world in 2001, when the expedition of the Ukrainian Speleological Association reached a depth of 1,710 m (5,610 feet), which surpassed the depth of the previously known deepest cave, Lamprechtsofen, in the Austrian Alps, by 80 meters (260 feet).
In 2004, for the first time in the history of speleology, the expedition of the Ukrainian Speleological Association reached a depth of over 2,000 meters (6,600 feet) and explored the cave up to -2,080 m (-6,824 feet).
The Ortobalagan Valley extends along the Berchil'sky anticliminal ridge, which descends gently northwestward. The entrances to the caves are lined along the anticlinial ridge, but the caves are controlled by longitudinal, transversal and oblique faults and include complex winding patterns in the plant view, remaining largely within and near the ridge area anti-clinical.
Caves are predominantly a combination of shallow wells and steep snake passages, although in some places they cut seemingly ancient fossil passages at different levels.