摘要：Tsunamis may leave traces on the landscapes whose study provides a prehistorical approach and the analysis of possible recurrences. In karstic areas, caves and speleothems are good recorders for natural or anthropogenic events. They preserve traces of fragile remains as prehistoric paintings and they have been used for palaeoseismology studies. The effects of the 2004 Asian tsunami on the karstic shores have been studied in Western Thailand, close to Phuket. Limestone cliffs of Koh Phi Islands and the marine cave of Phi Phi Leh have been poorly affected, but a prehistoric-event has provoked the deposit of a layer of coral fragments into the cave. This damage could be attributed to a tsunami but a storm cannot be excluded.
