In order to move the “exceptional” and massive rock, the tsunami was likely around 164-feet tall — the height of the Arc de Triomphe.

The Maka Lahi boulder is the largest cliff-top boulder in the world, researchers said. Photo by Köhler, M., Lau, A., Nakata, K., Goto, K., Goff, J., Köhler, D. and ...

On the island of Tongatapu, the main island of Tonga, researchers scoured the southern coastline for evidence of violent weather events that occurred thousands of years ago. They were specifically ...