Distance: 8.7 km (4.0 DOC hours) - Unmarked route, clear - Moderate terrain
Altitude: 1323m to 1688m. Gain: 900m. Loss: 887m . Gradient: 12 deg (Moderate)
Skills: - Streams (2/6)

Unmarked route, clear (7/9)
Unmarked route, follows obvious geography (river, spur, trail, etc)

Primary, unmapped (2/5)
Route not on maps, but is principal access to hut or along range / catchment

Moderate (difficulty: 3/5)
Occasional moderate climbs

Moderate (difficulty: 3/5)
Low scrub in open or bush / river rocks

Unknown (difficulty: 0/7)
Not specified

Streams (difficulty: 2/6)
Small streams, danger only in extreme weather

Unknown (difficulty: 0/7)
Not specified

From Sylvester Hut, follow the track west then south to cross Lake Sylvester outlet and continue a short distance along the southern shore where an obvious footpad leads between the two Sylvesters.

The footpad continues, climbing towards Iron Lake. As the Lake comes into view, head north to it's outlet. Cross and continue a short distance around the lake, then climb the obvious gut, cairned, to the tops.

Having attained the open ridge tops, continue to the saddle south of Ruby Lake and descend (through bog and Spaniard grass) to camp on at the far side of the lake.

The attached GPX shows a sidle from the previous saddle which is OK but also involves bog and Spaniard grass - probably better to stay on the ridge as long as possible.

Note: Described in the reverse direction to your journey

Heading anticlockwise, come a short way around the lake and then climb, South, to the saddle on the ridge, avoiding as much of the bog and Spaniard grass as possible (the gpx doesn't reach the ridge until the 2nd saddle and is probably not an ideal route).

Once on the ridge, follow the open tops SE to Iron Hill and look for a very obvious snow white quartz arrow marking the descent point. Follow cairns down to the outlet of Iron Lake and then the footpad leading down to Sylvester Lake. From there, the track leads around the lake, across the outlet and to the very comfortable Sylvester Hut.