Mount Frankland North

Mount Frankland North National Park is a 31,688-hectare protected area in the karri and jarrah forest country of the Warren bioregion, situated northwest of Walpole. The park protects representative forested landscapes of the lower southwest, including karri-jarrah-marri forest communities, and forms part of the broader Walpole-Nornalup region conservation network. The park is managed by DBCA and lies within the Southwest Australian Floristic Region biodiversity hotspot.

Mount Frankland North supports karri forest fauna including the critically endangered western ringtail possum, forest red-tailed black-cockatoos (nesting in hollow karri and marri trees), Carnaby's black-cockatoos, short-beaked echidnas, brush wallabies, and quendas. Tiger snakes and dugites inhabit damp creek valleys. The park's streams support marron in suitable cool-water habitats. Powerful owls hunt through the forest at night.

Karri (E. diversicolor) forest dominates on deep moist soils, interspersed with jarrah and marri on drier slopes. The complex forest structure supports an understorey of karri oak, native wisteria, and diverse ferns and orchids. Riparian zones support paperbarks and sedges. The park is botanically rich, forming part of one of the world's 25 biodiversity hotspots.

Archaean granite-gneiss basement overlain by deep laterite weathering profiles typical of the Darling Plateau. Karri forest grows on deep, moist, clay-rich soils derived from weathered granites in valley positions. Streams drain south into the Frankland River system.

Warm temperate Mediterranean climate with annual rainfall of 900–1,100 mm. Winters are wet and cool; summers warm and dry. The karri forest maintains a cooler, more humid microclimate than surrounding areas.

The area lies within Bibbulmun Noongar country. The forested southwest was used by Noongar peoples for hunting, gathering, and cultural practice. European timber-cutting commenced in the region from the 1890s. Karri timber was prized for construction and railway infrastructure.

Mount Frankland North National Park was proclaimed to protect forested country north of the Walpole-Nornalup National Park, extending conservation coverage across the lower southwest forest landscape. DBCA manages the park as part of the integrated southern forest conservation network.

Bushwalking through tall karri and jarrah forest. Wildlife observation at dawn and dusk. Spring wildflower observation. The Bibbulmun Track passes through the region. The Mount Frankland summit (one of the region's highest points at 422 m) offers views across the surrounding forest.

Located northwest of Walpole. Access via South Western Highway and local forest roads. Minimal visitor facilities in the park itself. Walpole and Manjimup provide accommodation and services.

Phytophthora cinnamomi dieback, climate drying reducing karri forest vitality, western ringtail possum threats, and fox predation are primary conservation challenges. Prescribed burning is conducted carefully to maintain forest structure while reducing fire risk.