Start (waypoint ‘START’) from the carpark. Cross Forest Rd to ‘1’ to join the walk trails on the east side. After only 10m, at ‘1-1’ take care to turn right at the sign at the track fork to follow the “..via Lookout” trail. Follow the nice foot-track up the hill side through the forest. Reach a platform lookout at ‘1-2’ which provides a view toward Bunbury, 20km NW. Descend on the track NE-ward to ‘2’, where it veers left (NW); then turn right (E-ward) to walk off-track along slope through reasonably open forest to rejoin the Marri Trail at ‘3’. Turn right to follow the trail down the hillside to meet an old forestry track at ‘4’. Turn right (S-ward) to follow the track to a junction at ‘5’. Instead of veering right to stay on the Marri Trail, cross the junction onto the partly overgrown continuation of the track. Follow this old track SSE; it closely follows a nearby gully (Quinderup Brook?) which lies as close as 20-30m to the left. Turn left at ‘6’ at another junction of old tracks, to continue along the west side of the gully. At ‘7’ turn left at a T-junction and follow an old track NE-ward for 150m, crossing the stream course to meet Quinderup Rd (unsealed vehicle track) at ‘8’. Turn sharp right and follow the ‘road’ SSE-ward for 400m and locate a faint old vehicle track veering off to the right at ‘9’. Follow this old track S-ward via ‘9-1′ following a stream course up a small side valley. Meet a more distinct old vehicle track at ’10’ and veer left to follow it SSE-ward, onto a broad hill-top. After about 700m, turn right (SW) at a T-junction. After only 40m, at ’12’, the track divides. To follow the full walk route, take the left hand fork toward the SW. (Or see Option below for short-cut to shorten walk after ’12’.). Pass a sidetrack joining from the left at ’13’ and reach a track junction at ’14’. Take the track on the right (NNW). It crosses the broad ridge top and then at ’14-1′ veers left to head W-ward down a pleasant, narrow valley with a stream course on the right, with tall Grass trees becoming common in the surrounding forest. At ’15’ the track veers right to cross the stream course and soon after reaches a Y-junction which is near the corner of private land. Take the right-hand fork NW-ward; cross a stream course after 400m and then veer right. Pass a side-track at ’17’ and head NE-ward up the valley. The distinctive Pineapple bush (Dasypogon hookeri) is especially abundant here. After about 500m (at ’18’) veer left onto a sidetrack which heads NW-ward up a gentle gully to meet Forest Rd (at ’19’). Turn left and follow the road (unsealed) SW for 200m and locate an old track veering W-ward off the road at ’20’. Cross an informal mountain bike track at ’21’ and continue off-track W-ward down a gentle valley. Rejoin an old vehicle track at about ’22’ and reach a track junction at ’23’. Veer left to follow the track S-ward to ’24’; then veer right onto a side track to reach a small waterhole at ’25’ surrounded by peppermint trees. (The waterhole may be near-filled toward the end of a good wet winter, but dries out during summer and has been littered in the past with household rubbish.) Retrace your steps via ’24’, and head N-ward following the track up the valley via ’25-1′ and ’25-2′. After about 800m, meet a T-junction at ’26’; turn sharp right to continue up the valley. A sidetrack joins from the left at ’27’. Turn sharp left here (NW) onto the Marri Trail and follow it NW-ward. Cross a gentle ridge crest after 600m (elevation ~152m). At ’27-1′ the track veers right (NNW) and descends the hillside. Cross a track junction at ’27-2′ and continue on the Marri Trail which partly follows the Forest boundary and then turns ENE-ward at ’28’. At a Y-junction at ’29’ (which is within 150m of Crooked Brook Rd to the north), veer right (SE) to stay on Marri Trail. Reach the edge of a pine plantation at ’30’ and follow it south up the narrow valley for about 700m, with a stream course on the left. Follow the Marri Trail via ’31’ and ’32’ to cross (E-ward) the dam wall. The small ‘billabong’ upstream of the dam wall is quite picturesque after good winter rain, but tends to dry out during summer. Continue past the picnic shelters, barbecues and toilets to return to the Start point.
Shorter walk option (14.5km): At waypoint ‘12’ in SE instead of continuing SW-ward to ’13’, veer right toward ‘13-ALT’ along another old forestry track which heads WNW down a narrowing valley, with a stream course on the right. At a Y-junction at ’13-ALT’ veer left (W-ward) to stay on the left side of the stream course. When the track divides again at ’14-ALT’, take the right-hand fork to cross the stream course and meet another track at ’15-17-ALT’. Then veer left (SW) to rejoin the described route at waypoint ’18’. This ‘short-cut’ reduces the total walk distance by about 1.5km.