10 longest caves in Europe

10. Hiriatzhohle – Schmelzwasserhohle

• length: 112,929 m
• location: Austria
• year of discovery: 1949
• place in the world: 22

9. Sistema del Gandara

• length: 116,740 m
• location: Cantabria, Spain
• year of discovery: 2005
• place in the world: 19

8. Steinbrücken Cave

• length: 136,074 m
• location: Austria
• year of discovery: 1929
• place in the world: 17

7. Ozerna

fot. Богдан Репетило / wikipedia.org (CC BY-SA 3.0)

• length: 140,490 m
• location: Ternopil region, Ukraine
• year of discovery: 1940
• place in the world: 16

6. Sistema del Mortillano

• length: 146,500 m
• location: Cantabria, Spain
• year of discovery: 1960
• place in the world: 15

5. Schoenberg-Höhlensystem

• length: 151,248 m
• location: Austria
• year of discovery: 1976
• place in the world: 14

Ozerna. ozerna                             .

length:

2022/05

• 140,490 m location:
• Ternopil region, Ukraine year of discovery:
• 1940 place in the world:
• 16

3. Sistema del Alto Tejuelo

• length: 172,959 m
• location: Cantabria, Spain
• year of discovery: 1965
• place in the world: 12

2. Hölloch

fot. Rama / wikipedia.org (CC BY-SA 2.0 fr)

• length: 208,000 m
• location: Glarnine Alps, Switzerland
• year of discovery: 1875
• place in the world: 11

1. Optymistychna Cave

• length: 257,000 m
• location: Ternopil region, Korolivka, Ukraine
• year of discovery: 1966
• place in the world: 6