Biggest Wave Lifted a 1200-Tonne Boulder to a Cliff Top 7000 Years Ago, the Third Largest Boulder in the World In the remote island nation of Tonga, where the Pacific Ocean meets huge cliffs, the ...

Tonga’s coastline reveals hidden boulder, Maka Lahi, the world’s largest cliff-top boulder, carried inland by a massive tsunami 7,000 years ago, study said.