From the start point (at waypoint ‘START’) cross the nearby Wariin Brook and follow the vehicle track 1.5km WSW in a fairly straight line (along old fenceline) through wandoo woodlands to reach a T-junction at ‘1’. Turn right and follow the vehicle track for less than 200m to a stream gully at ‘2’. Veer westward to head off-track along the southern side of the gully through open woodland for almost 1km, passing a small outcrop on the north bank before reaching ‘3’. Then head SSW, soon crossing a flat laterite-capped ridge top at ‘4’. Descend gently southward across rocky ground and low heath (via ‘5’ and ‘6’) to reach quite open ground at the head of a SW-sloping side valley. Head S-ward across the slope for about 250m to ‘7’, then veer SW to ‘8’ along a steep, pebbly escarpment below a distinctive, laterite-capped hill-top. Then veer sharp right (WSW) to head downslope for 400m through wandoo woodland to ‘9’ in a narrow gully. Descend WNW along the gully to ’10’, then cross the gully and head westward for about 100m to cross Hancock Brook and reach a bare area of outcrop on the west bank. You will now follow the Brook northward for ~3km. (Note: Unfortunately the southernmost 500m of this section along the Brook between ‘13’ and ‘16-3’ has been affected by an ugly new temporary track bulldozed along the stream course during a DBCA – Parks and Wildlife control burn in 2015/2016 in a seemingly cavalier and environmentally poorly-considered approach to burn management, and also – being only ~2km upstream of the Hancock Brook confluence with the Helena River – evidently ignoring the implications of resulting highly turbid sediment flow into Lake CY O’Connor drinking water reservoir.) Simply head northward along the east bank of Hancock Brook via ’12’ through to ’26’, passing a possible very small waterfall at ’16’ and small rapids at ’16-2′ (only flowing following good winter rainfall). Cross other rock slabs along the way and pass through a thicket of sheoak. Also cross Cavern Road at ’17-2′ (which is just over 1km of walking distance since you started along the Brook). Continue northward via ’18’ etc, staying close to the stream course. Following good rainfall there will be very small rapids or cascades at several points along the way (e.g. at ’19’, ‘21’, ‘22’). In places, the shrubland becomes denser near the stream course and it is then best to briefly detour up to 30m away from the stream for easier walking. Cross a small, low granite dome at ’23’ and then cross the Brook to continue northward along the west bank through very picturesque woodlands. Stay above the stream gully which becomes more deeply incised northward. Cross another vehicle track at ’24’ and soon after (at ‘25’) cross a deep side gully. Continue north to ’26’ by which point you have walked 3km along Hancock Brook. Descend the steep western bank and head NE upslope through mixed forest to ’27’. Then veer northward to cross a gentle gully and pass through a patch of shrubland to reach a granite slab at ‘27-1’. Head up the sloping slab via ’28’ (from where there will be good views, including to the pyramid-shaped Mt Dale). After reaching the top of the rock slope at ’29’, head directly upslope and in less than 50m arrive at a cluster of large boulders near the forest edge. This makes a pleasant spot for a rest stop. Then veer right to head WSW along slope through open jarrah forest to ’31-1′ on the flank of a broad ridge. Descend to a gentle saddle area at ‘32’ before crossing a small hill top at ‘32-1’. Descend again slightly to a small outcrop at the head of a narrow, NE-ward draining gully. Continue along slope ESE to enter wandoo woodlands again, and cross more rocky outcrops. Veer right at ‘34’ to head SSE-ward, upslope, to return to the crest of the ridge (via ’34-1′ and ’35’). Re-cross Cavern Road at ’36’ and veer SSE downslope to reach a rock outcrop at ’37’ from where there is a view SW across a small valley. Head along slope through partly scrubby bush and sheoak thickets (avoiding low, thick heath over the crestal area of the ridge). After ’37-1′ descend the plunging ridge crest via ’38’, crossing rocky outcrops. At ’39’ veer E-ward and soon descend again to cross the head of a small gully at ’40’. Cross a small hill top via ‘40-1’ then (after ‘41’) descend another steepish slope to cross a small stream course at ’42’. Finally cross a broad ridge to rejoin the vehicle track at ‘43’ and follow it eastward for about 100m, back across Wariin Brook, to regain the Start point.