Purnululu National Park, Australia
This park is located in the northeastern part of Western Australia, and it has an area of 2,397 km2. The deep quartz sandstone canyons of the Bungar Bungere Range date back to the Devonian. Twenty million years of erosion have shaped the peaks into cones and honeycombs, and a dark grey cyanobacterial (a single-cell photosynthetic autotrophic organism) crust covers the sandstone on the steep cliffs. These features are caused by the interaction between many natural factors, such as geology, ecology, wind erosion and climate. Over the past 30 years, the park has transformed itself from an obscure wilderness into a popular area sought after by photographers from all over the world. It has also been regarded as Australia’s ‘Grand Canyon’ and is becoming as popular as Ayers Rock.