Mount Frankland

Mount Frankland National Park near Walpole in WA's far southwest protects tall karri and tingle forest dominated by the massive red tingle (Eucalyptus jacksonii) and karri (Eucalyptus diversicolor) trees. The park is famous for the Giant Tingle Tree — one of the world's largest living eucalypts by girth, with a base circumference of over 24 metres. Mount Frankland itself offers a short but rewarding climb to a granite summit with panoramic views across the surrounding treetops and Walpole Wilderness area. The park is part of the Walpole Wilderness Area — one of the largest areas of contiguous old-growth forest in WA — and connects with the adjacent Walpole-Nornalup National Park.

The tall forest of Mount Frankland supports forest-dependent fauna including baudin's black cockatoos and forest red-tailed black cockatoos that are among the most ecologically significant residents. Western ringtail possums inhabit the canopy of peppermint and karri. The chuditch (western quoll) occupies suitable forest habitats. Powerful owls hunt through the tall forest at night. The tawny frogmouth roosts in perfect camouflage against bark. Carpet pythons and tiger snakes are the largest reptiles. The extraordinary diversity of hollow-bearing old-growth trees provides habitat for hollow-dependent species that are declining across the broader landscape.

The park's forests are extraordinary for their three massive eucalypt species: red tingle (Eucalyptus jacksonii), whose massive base buttresses are found only in a small area of the far southwest; rate tingle (E. guilfoylei); and karri (E. diversicolor). These trees can reach 60–75 metres in height and 24+ metres girth, making them some of the world's most imposing trees. The understorey is dense and diverse, with peppermint, various ferns, and a lush groundcover of native violets, sundews, and native orchids in the high-rainfall environment. The forest floor is deep with accumulated leaf litter and fallen timber.

Mount Frankland sits in the Leeuwin Block — ancient Precambrian metamorphic and granitic rocks in the far southwest of WA. The granitic summit of Mount Frankland provides the elevated viewing platform and supports a different plant community to the surrounding forest. The high rainfall of the Walpole area (over 1,200 mm annually) has leached the soils but the forest has adapted through extensive mycorrhizal networks and deep rooting that maximise nutrient and water capture.

The Walpole area receives WA's highest annual rainfall for a settled area — over 1,200 mm. Winters are cool, wet, and frequently foggy. Summers are mild (18–24°C), moderated by the Southern Ocean. The high rainfall sustains the giant tingle forests. Spring and autumn are ideal for visiting with mild temperatures and lower rainfall. The forest's extraordinary moisture creates a cool, pleasant microclimate even in summer.

The Walpole forests are within the traditional country of Bibbulmun Noongar people. The massive tingle and karri forests provided timber, food, and shelter. European timber harvesting targeted karri from the 1870s and tingle from the early 20th century, with large areas logged. The Walpole area's remoteness meant some stands survived the logging era. Conservation advocacy from the 1970s onward secured increasing protections for the tall forest.

Mount Frankland National Park was established to protect the giant tingle trees and surrounding tall forest. The park connects with Walpole-Nornalup National Park and the broader Walpole Wilderness Area to form one of WA's most significant forest conservation reserves. The Giant Tingle Tree has been a visitor attraction for decades.

The Giant Tingle Tree — a massive, ancient red tingle with a girth of 24 metres — is the park's centrepiece. A boardwalk allows visitors to walk around the base without damaging the tree's shallow roots. The Mount Frankland Summit Walk (1 km return) provides panoramic views over the forest canopy. The surrounding Walpole Wilderness Area includes the Valley of the Giants Tree Top Walk (adjacent park). The Bibbulmun Track passes through the area.

The park is approximately 30 km north of Walpole, accessible via a sealed road. Carparking and picnic facilities at the Giant Tingle Tree. Walpole provides accommodation and services. Parks entry fees apply. Open year-round; spring and autumn are ideal.

Old-growth forest protection, management of Phytophthora cinnamomi dieback, and reducing wildfire risk in the tall forests are primary conservation challenges. The giant tingle trees are vulnerable to root compaction and disturbance — the boardwalk around the Giant Tingle Tree was designed specifically to allow viewing without damaging the root system. Climate change projections for the far southwest indicate drying conditions that could stress the tingle ecosystem.