Indonesian tsunami days meet The Island of Ceylon
Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea. Out in the depths of the ocean, tsunami waves do not dramatically increase in height. But as the waves travel inland, they build up to higher and higher heights as the depth of the ocean decreases.
The 2004 Indian Ocean tsunami was triggered by a 9.3 magnitude earthquake with the initial surge wave of the tsunami measuring 33 metres. It was the largest earthquake-generated tsunami in history.