
Natural spectacle: Australia's arid Kati Thanda-Lake Eyre has been transformed into an incredible watery oasis thanks to a rare natural occurrence.

Long journey: The lake -- the country's oldest -- has been flooded by desert rainfall that's made the journey 100 kilometers across the Australian outback.

Rare phenomenon: Water only floods the lake every three to 10 years. It becomes completely flooded only three times every 160 years.

Rainbow effect: The salt diluted by the water and causes algae to grow, creating the range of colors.


