He's hopeful the mud-wasp dating technique can now be used at more locations right across the north of Australia, and perhaps at other rock art locations in the Americas and Europe. Gavin Broad is ...

FIVE big hippos balancing, Step by step on a slippery rock, But all of a sudden they fell into the mud, And down came the hippos with a great, big thud… In the mud! ONE big hippo balancing ...

Surrounding rocks are blown apart as the steam expands. The often violent events result in the "rapid ejection of boiling water, steam, mud, and rock fragments". They can reach heights of 1.2 ...