The Dandenong Ranges are a set of low mountain ranges, rising to 700 metres at Mount Dandenong, east of Melbourne, Victoria, Australia. Consisting predominantly of Devonian dacite and rhyodacite, the topography consists of a series of ridges dissected by deeply-cut streams. Sheltered gullies in the south of the range are home to tree ferns and Mountain Ash, Eucalyptus regnans, whereas the drier ridges and exposed northern slopes are covered by dry sclerophyll forest of stringybarks and box. A large part of the Dandenongs are covered by the Dandenong Ranges National Park. It includes the popular Puffing Billy Railway tourist attraction.