We were staying at Kyneton in Victoria and went for a bushwalk at the Black Hill Reserve. You could see lots of regeneration following the bushfires in the area but also lots of fallen trees and limbs were lying throughout the area. "Contrary to local popular belief, Black Hill is not an old volcano, it is an outcrop of granite, a plutonic rock. A large mass of molten magma has cooled very slowly at depth below the earth's surface, allowing the formation of the minerals forming granite, primarily quartz, mica, and feldspar. This large mass has then been forced up to the earth's surface, and over millions of years been subjected to the effects of erosion due to rain, wind, and temperature changes, leaving the scenery we see at Black Hill today." (Information taken from Internet Black Hill Reserve site)