Tonga volcano unleashed underwater flows that reshaped the seafloor
The destruction of telecommunications cables during the eruption of Hunga Tonga-Hunga Haʻapai volcano in 2022 shows that underwater debris currents can travel at 122 kilometres per hour
![Tonga volcano unleashed underwater flows that reshaped the seafloor](https://images.newscientist.com/wp-content/uploads/2023/09/07154907/SEI_170527151.jpg)