How Deep Is Veryovkina Cave, the Deepest Cave on Earth?

The Deepest Cave Ever Measured

Veryovkina Cave in Abkhazia is the deepest known cave on Earth, plunging 7,257 feet (2,212 meters) below the surface — a descent so extreme that expedition teams need four full days of continuous climbing just to reach the bottom.

Where Is Veryovkina Cave?

The cave sits inside the Arabika Massif, an ancient limestone formation on the eastern coast of the Black Sea in Abkhazia, a disputed territory on the southern edge of the Caucasus region. The massif is one of the most cavernous geological structures on the planet, riddled with shafts and tunnels carved over millions of years as water slowly dissolved the soluble limestone beneath the surface. Veryovkina is the crown jewel of this underground labyrinth, and it claimed its world record after Russian cave divers from the Perovo Speleo Club pushed its known depth to 7,257 feet in 2018.

What Makes the Descent So Extreme?

The descent into Veryovkina is not a single continuous drop — it is a grueling multi-day journey through a series of vertical shafts, narrow squeezes, and technical rope sections. Explorers carry everything they need: food, sleeping gear, scientific equipment, and emergency supplies. Because the descent cannot be completed without rest, teams establish multiple underground camps at different depths, sleeping thousands of feet below daylight before continuing downward. The return journey to the surface takes additional days. In total, a full expedition to the cave’s deepest known point typically lasts around two weeks from entry to exit.

Life in Total Darkness

One of the most remarkable discoveries inside Veryovkina is not geological — it is biological. Scientists found living crustaceans, including shrimp and other invertebrates, thriving in complete darkness at the cave’s deepest sections. These organisms have no access to sunlight and no obvious connection to surface ecosystems. Their presence suggests that life adapts to almost any environment given enough time, and it raises profound questions about where life might persist in similarly extreme conditions elsewhere on Earth — or beyond it.

The Cave May Go Even Deeper

At its current measured endpoint, Veryovkina does not end cleanly. Explorers reached a flooded passage — an underwater tunnel with a strong current flowing through it — suggesting the cave continues beyond what has been mapped. The true floor of Veryovkina Cave has never been reached. Cave divers have attempted to push through the sump, but the technical difficulty and depth make it one of the most challenging underwater objectives on the planet. What lies beyond remains unknown.

Why Veryovkina Matters

Veryovkina Cave is a reminder that Earth’s most extreme environments have not all been catalogued. While the deep ocean and remote mountain ranges capture most of the public imagination, the underground world remains one of the least explored frontiers on the planet. Each expedition to Veryovkina advances scientific understanding of geology, hydrology, and biology in conditions that push human endurance to its limit. The cave is not just a record — it is an open question, still waiting to be fully answered.