The king of trees in the mountains of the Southern Alps, the larch is the only conifer to drop its needles in winter. In the spring, its cones are a characteristic dark purple. The larch is one of the few European tree species that is imputrescible, that is to say, it does not rot. This is why, despite the fact that it twists as it dries out, it is widely use in frameworks, drinking troughs and other water holding vessels in the mountain villages. Incapable of germinating in its own undergrowth, it needs natural openings such as avalanche corridors for the young shoots to develop. It is found at altitudes in excess of 2,200 metres, adopting dwarf forms in these "combat" zones. The larch tree growing at this point on the trail is several hundred years old.