Voronya洞穴，也稱為Krubera洞穴，是世界上最深的洞穴。

這個名為Krubera Voronya的洞穴被認為是“洞穴中的珠穆朗瑪峰”。洞穴通道全長13232米，深度2197米。它位于阿布哈茲（格魯吉亞）附近的黑海

洞穴入口與其最深探測點之間的高差為2197±20米（7208±66英尺）。2001年，烏克蘭洞穴學協會的探險隊到達1710米（5610英尺）的深度，比之前已知的奧地利阿爾卑斯山最深的洞穴Lamprechtsofen的深度高出80米（260英尺），成為世界上已知的最深洞穴。

2004年，烏克蘭洞穴學協會的探險隊在洞穴學史上首次到達2000米（6600英尺）以上的深度，并探索了2080米（-6824英尺）的洞穴。

奧爾托巴拉甘山谷沿著Berchil的背斜山脊延伸，該山脊向西北方向平緩下降。洞穴入口沿背斜山脊排列，但洞穴受縱向、橫向和傾斜斷層控制，在植物視圖中包括復雜的纏繞模式，主要位于山脊區域內和附近。

洞穴主要由淺井和陡峭的蛇道組成，盡管在一些地方，它們在不同的層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.