Compiled by: Dave Bunnell
Visit his site at http://www.goodearthgraphics.com/virtcave/largest.htm for photos and updates
| Feature | Length | Location |
|---|---|---|
| Longest column | 61.5 meters | Tham Sao Hin, Thailand |
| Tallest unitary stalagmite | 72.76 meters | YuLongdong, Guangxi Province, China |
| Tallest stalagmite in a cluster | 70 meters | Hang Son Doong, Vietnam |
| Longest free-hanging stalactite | 28 meters | Gruta do Janelao, Brazil |
| Longest single soda straw | 9.13 meters | Wonder Cave, Gunung Mulu, Malaysia |
| Longest soda straw grouping | 9.03 meters plus several over 8 meters | Unnamed cave, Mexico |
| Tallest gour (rimstone dam) | 22 meters | Actun Kotob, Belize |
| Longest single gour in a cave | 61 meters | Xe Bang Fai Cave, Laos |
| Longest single gour, formed on the surface (1) | 610 meters long | Wadi Sannur Cavern, Egypt |
| 20 meters high | ||
| Longest connected gour series | 400 meters | Tinas Tepe Magara, Turkey |
| Flowstone cascade with greatest vertical extent | 150 meters | Neverland to Dead Sea,Lechuguilla Cave, New Mexico |
| Longest continuous formation, white calcite crust in a stream channel | 12+ miles surveyed, continues on… | Snowy River Passage, Fort Stanton Cave, New Mexico (as of february 2026) |
| Longest gypsum flower petal (supported) | 1.98 meters | Double Bopper Cave, Arizona, USA |
| (1) Wadi Sannur is a rare type of cave formed by roofing over of a giant surface gour at its spillover point. The gour was formed by a large thermal spring. |