With the integrity of the eurozone, one of the three great economic areas, in some doubt, it is seriously discombobulating for banks, sovereign wealth funds, pension funds, insurers and central banks that the safe harbour of US Treasury Bonds, US government debt, no longer looks quite the comforting refuge in a storm that it once was.

BBC: As the US loses AAA, where is a safe harbour?

The sprawling lake, estimated at being two thirds the area of Sydney Harbour, is framed by the Danbulla Forest, a green blanket of rainforest, pine and scrub that offers refuge to kangaroos, bird colonies and platypus.

BBC: Escaping the heat in Far North Queensland