The Porongurup National Park is a 25 km ² park in south-west Western Australia, Australia.
The park is located about 360 km south-east of Perth and 40 km north of Albany. Here rise two mountain ranges from the great southern agricultural countryside of western Australia: the great Stirling Range in the north with the eponymous national park and the much smaller Porongurup Range about 30 km south. The granitic rocks of the mountain range extending in an east-west direction over a length of 12 km and are high at its highest point, the Devils 's Slide, 670 meters. Thus they rise about 400 meters from the surrounding plain.
The Porongurup Range consists of about 1.184 billion years old granite. It is believed that the granite from a molten part of the Australian continental plate originated, which is cooled under high pressure in the earth's crust. Erosion of the surrounding metamorphic rock is the granite exposed later as a mountain range. The granite mountains of Porongurup Range were during the Eocene, when the sea level was about 100 m higher than today, islands in a sea that extended in the north to the Stirling Range.
The name is derived from the name Porongurup Purringorep the Aborigines who live in this area for thousands of years. The name was recorded by Captain Wakefield, who leads the first expedition to this area for the first time. The area was declared in 1971 with an initial area of 11.57 km ² national park.
Flora and Fauna
Karribäume (Eucalyptus diversicolor ) grows on the upper slopes in the deep red soil, also called " Karri ". Fossil pollen indicate that the Karribäume were circulated during a wetter period in the earth than it is today. As the climate became drier, the Karris disappeared more and more. Only in places with favorable soil this species could survive. The Porongurup Range is one such "island" with Karri forest.
The largest parts of the 750 plant species can be found but in the jarrah and marri forests on the lower-lying laterite, including many acacia and Hoveabüsche. In the National Park are 55 species of orchids and 50 species from the family of the silver tree plants, before including the genera Banksia, Dryandra, Hakea and Grevillea.