| ★ |  Kentucky Holds the Longest Cave Network In The WORLD | Underground Marvels | Science Channel | Science Channel @sciencechannel | — | — | |
| 3 |  The ANCIENT Grand Canyon Caverns | Underground Marvels | Science Channel | Science Channel @sciencechannel | — | — | 84 |
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| 18 |  Scientist Dived into the Deepest, Longest & Most Difficult Cave System in the World…for Science | Today I Learned Science @tilscience | — | Estados Unidos | 82 |
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| 19 |  How Deep Can Caves Get? | | 161.2K | — | 82 |
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| 13 |  The world's longest underground railway tunnel | | 10.7K | Reino Unido | 82 |
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