Introduction
The deepest caves on Earth are found in limestone karst regions where water has dissolved rock over millions of years, creating vertical shafts and underground rivers.
Exploring these caves requires weeks of underground camping, technical rope work, and extreme physical endurance. A single expedition to the bottom and back can take 5-7 days.
1. Veryovkina Cave, Georgia
- Depth: 2,212 m (7,257 ft)
- Location: Arabika Massif, Western Caucasus
- Explored: Depth record set 2018
Veryovkina is the deepest known cave on Earth. It was explored by Russian cavers who reached the current depth after years of expeditions.
The cave contains a series of vertical shafts, tight squeezes, and underground rivers. The journey to the bottom and back takes about a week.
2. Krubera Cave (Voronya), Georgia
- Depth: 2,197 m (7,208 ft)
- Location: Arabika Massif, Western Caucasus
- Record: First cave past 2,000 m (2004)
Krubera was the world's deepest cave until Veryovkina surpassed it. Ukrainian caver Alexander Klimchouk first pushed past the 2,000 m barrier here in 2004.
3. Sarma Cave, Georgia
- Depth: 1,830 m (6,004 ft)
- Location: Arabika Massif
- Notable: Complex multi-level system
Sarma is the third deepest cave, also in the Arabika Massif. The concentration of deep caves in this Georgian mountain range is unique in the world.
4. Illyuzia-Mezhonnogo-Snezhnaya, Georgia
- Depth: 1,753 m (5,751 ft)
- System: Connected cave system
- Location: Western Caucasus
This system combines three previously separate caves connected by underground passages. The connection pushed the total depth past 1,700 meters.
5. Lamprechtsofen, Austria
- Depth: 1,735 m (5,692 ft)
- Length: 51 km
- Location: Salzburg Alps
Lamprechtsofen is the deepest cave in the Alps and one of the longest. It is the deepest through-trip cave, meaning it has entrances at different elevations.
6. Gouffre Mirolda, France
- Depth: 1,733 m (5,686 ft)
- Location: French Alps
- Discovered: 1971
Gouffre Mirolda is the deepest cave in France. It features massive underground chambers and a river passage at depth.
7. Gouffre Jean-Bernard, France
- Depth: 1,602 m (5,256 ft)
- Location: French Alps
- Record: Held world depth record in 1983
Gouffre Jean-Bernard held the world depth record in 1983. It remains one of the most technically challenging caves to explore.
8. Sistema del Cerro del Cuevon, Spain
- Depth: 1,589 m (5,213 ft)
- Location: Picos de Europa
- Length: ~35 km
This Spanish cave system in the Picos de Europa mountains is the deepest in Spain. It includes vast chambers and underground waterfalls.
Key Facts
- The top four deepest caves in the world are all in the Arabika Massif, Georgia.
- Veryovkina at 2,212 m is deeper than six stacked Eiffel Towers.
- A round trip to the bottom of Veryovkina takes about a week.
- The first cave to exceed 2,000 m depth was Krubera in 2004.
- Deep caves form in limestone karst where water dissolves rock over millions of years.
Fun Facts
- Cavers must camp underground for days during deep cave expeditions.
- The temperature at the bottom of deep caves is typically 4-8°C year-round.
- Krubera Cave contains a species of insect found nowhere else on Earth, living at 2,000 m depth.
- Lamprechtsofen is the deepest cave you can walk through from top to bottom using two entrances.
Final Thoughts
The world's deepest caves represent some of the most extreme exploration on Earth. These underground chasms, reaching over 2 km below the surface, require weeks of effort and extraordinary courage to explore.
