Cradle Mountain-Lake St Clair National Park, Tasmania, Australia.
Mountains and Snow Gums (eucalyptus trees) rise above the Overland Track, in Cradle Mountain-Lake St Clair National Park, Tasmania, Australia. The Tasmanian Wilderness was honored as a UNESCO World Heritage Site in 1982, expanded in 1989. The famous Overland Track features mountains, temperate rainforest, wild rivers, alpine plains, abundant birds, and other wildlife. Mostly native to Australia where they dominate the tree flora, Eucalyptus is a diverse genus of flowering trees (and a few shrubs) in the myrtle family, Myrtaceae. Many are known as gum trees because of copious sap exuded from any break in the bark. The most extensive dolerite formations in the world dominate the landscape of Tasmania, where magma intruded into a thin veneer of Permian and Triassic rocks over perhaps a million years during the Jurassic breakup of supercontinent Gondwana in the Southern Hemisphere, forming vast dolerite/diabase sills and dike swarms. (North American geologists use the term diabase instead of dolerite to refer to the fresh, unaltered rock.)Add to Cart Add to Lightbox Download