Analysis has shown a boulder weighing almost 1,200 tonnes in Tonga is one of the largest known wave-transported rocks in the world, providing new insights into the Pacific region’s history and risk of tsunamis.
PhD candidate Martin Köhler from The University of Queensland’s School of the Environment says the Maka Lahi boulder measuring 14 x 12 x 6.7 metres was moved more than 200 metres inland by a tsunami around 7,000 years ago.
