Walpole-Nornalup National Park is a national park in the South West region of Western Australia, 355 km (221 mi) south of Perth. It is famous for its towering karri and tingle trees. Red tingle trees are unique to the Walpole area. The park is part of the larger Walpole Wilderness Area that was established in 2004, an international biodiversity hotspot.

Eucalyptus jacksonii, commonly known as the red tingle, is a species of tall tree endemic to the southwest of Western Australia and is one of the tallest trees found in the state. It has thick, rough, stringy reddish bark from the base of the trunk to the thinnest branches, egg-shaped to lance-shaped adult leaves, flower buds in groups of seven, white flowers and shortened spherical to barrel-shaped fruit.