Scientists discover lost world in the Pacific island of Papua New Guinea.

The team of biologists included experts from Oxford University, the London Zoo and the Smithsonian Institution and are believed to be the first scientists to enter the mountainous Bosavi crater. They were joined by members of the BBC Natural History Unit which filmed the expedition for a three-part documentary which starts tomorrow night.

They found the three-kilometre wide crater populated by spectacular birds of paradise and in the absence of big cats and monkeys, which are found in the remote jungles of the Amazon and Sumatra, the main predators are giant monitor lizards while kangaroos have evolved to live in trees. New species include a camouflaged gecko, a fanged frog and a fish called the Henamo grunter, named because it makes grunting noises from its swim bladder.

I am posting this as an addendum to the beautiful video I put up yesterday.

I have a deep and abiding respect for nature and am constantly amazed and thrilled by the diversity and beauty of the world around us.

It would be a sin for anything to spoil such a pristine and delicate environment. I certainly hope there are no mineral deposits or oil reserves in this area.

Perhaps just this once mankind can resist the urge to remake it in their own image.

Wow, kangaroos that live in trees. Can you imagine such a thing?