The Nuraghe Nullu in Georgia is a vertical shaft with unnervingly smooth walls that stumps geologists. It's not a solution cave, lava tube, or sinkhole—its precise geometry and anomalous texture don't fit any standard category. Natural or artificial? The jury is still out. 🕳️🔬
Nuraghe Nullu: mysterious vertical shaft defies geological classification near Zukavville village
Key facts
- The Nuraghe Nullu (Kardahora shaft) is a vertical cylindrical shaft with smooth walls and a chambered base
- Geologists classify it as a natural formation but it does not fit any standard cave category
- It is not a solution cave, lava tube, or normal sinkhole
- Its geometry and texture are described as anomalous, leaving it in academic limbo between natural and artificial
- The shaft extends deeply into the earth near Zukavville village in the Caucasus region
Site mentioned
📍 Nuraghe Nullu🌍 Show on the globe
Sources
10 Mysterious Caves That Defy the Laws of Depth - AOL.comaol.com
For years, this cave has puzzled explorers. Surveys place it deeper than 1,500 meters, but geological clues suggest it connects to lower systems that remain ...
Keep exploring
Every site on this page sits on the globe, and the people who research them are on the Discord.
3D Globe · Sites by country · Story Archive · Research Library · Weekly Journal · Search
AI-generated text · images from the original sources · always verify with the sources.