Whenever I visit friends and relatives in Melbourne in South Eastern Australia, I like to spend some time in the cathedral-like mountain ash forests. In this photo, you can just detect the slightly bluish haze typical of eucalyptus forests. Eucalyptus oil is volatile, and also adds a wonderful fresh fragrance to the air. These trees are the second tallest in the world (after the Coast Redwood), and are the tallest flowering plant in the world.