The trail passes the ruins of the 'Greenham House,' which was destroyed by a bushfire in the 1980s.
The gully is part of a 100-hectare conservation area managed by the Department of Biodiversity, Conservation and Attractions.
The area is home to the rare and threatened granite-dwelling plant species, including several varieties of native orchids.
The gully was named after the distinctive whistling sound made by wind passing through the narrow rock formations in the upper sections.
Whistlepipe Gully is a 3.5-kilometre loop trail located in the Mundy Regional Park that follows a seasonal creek bed through the Darling Scarp. The terrain consists of granite outcrops, low-lying scrub, and open wandoo woodland. Hikers encounter the ruins of an architect-designed home built by Wallace Greenham in the 1960s, featuring stone walls and foundations integrated into the natural landscape. The trail offers panoramic views overlooking the Perth metropolitan area and the coastal plain. The creek typically flows strongest following winter and spring rainfall. The path is classified as a Grade 3 hike, requiring a moderate level of fitness due to uneven ground and rocky sections.
The stone foundation ruins overlooking the Perth skyline.
Bring a physical or downloaded offline map, as mobile reception is intermittent in the gully base.
Use trekking poles if you have knee sensitivities, as the descent into the gully features steep, loose gravel sections.
Ensure your footwear has deep tread, as granite slopes become extremely slippery when wet.
Do not attempt the trail during extreme heat warnings or total fire bans as the area is highly fire-prone.
Stay strictly on the marked trails to prevent erosion and protect sensitive orchid habitats; carry out all waste.
