Hummanaya
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Hummanaya Blowhole
දික්වැල්ල හුම්මානය | |
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  Hummanaya Blowhole location in Sri Lanka | |
| Coordinates: 5°58′40″N 80°44′13″E / 5.9778905°N 80.7369175°E |
Hummanaya Blowhole is the only known blowhole in Sri Lanka and it is considered to be the second largest blowhole in the world.[1] Hummanaya (Sinhala: හුම්මානය = හූ+මානය) refers to the noise, "hoo", that can be heard a distance away when the blowhole is active.[2]