The Kalamunda and Mundaring National Parks provide for some excellent bushwalking close to Perth. Piesse Brook flows northward through the area and meets the Helena River upstream from the Pipehead Dam in the north. There are lots of good views from the enclosing rugged valley slopes which are covered with open woodlands of jarrah, marri, wandoo and butter gum, interrupted by numerous granite outcrops and some large areas of open heathlands. The heathlands offer superb wildflower displays in late winter and spring. The route passes small waterfalls on Piesse Brook at Rocky Pool and on a side stream and also visits the Lower Helena Pipehead Dam reservoir in the Helena River Valley. The route also includes a 2km section of the Bibbulmun Track which begins in nearby Kalamunda and crosses from SW to east through the area. The route also uses some of the various other, mainly unmarked tracks. Some are rough 4WD vehicle tracks which in part follow the high-voltage power transmission lines which unfortunately pass from NW to SE right through the middle of the national park area!
Some of the tracks are quite steep and gravelly but should not be any problem for the reasonably fit and careful.
Variations to this walk (using the additional waypoints and map) could include a track along a ridge in the NW which provides good views west over the heathlands of the Darling Scarp and across the Swan Coastal Plain. Also the walk can be varied to start in Kalamunda and can then include more of the Bibbulmun Track and also a track from Crescent Road (off Mundaring Weir Road) to Schipps Road through Jorgensen Park .
Note: The Friends of Piesse Brook carried out a massive weed clean-up program and native plantings along Piesse Brook around 2000-2010. They achieved impressive results in restoring the local habitat within the Park, especially along the banks of the Brook itself, which had previously become severely infested with various introduced plant species including the introduced pink- to red-flowering weed, Watsonia, and blackberries, pampas grass and other weeds, which were choking out the native heathland.