Distance: 2.7 km (1.5 DOC hours) - Unmarked route, clear - Easy-moderate terrain
Altitude: 1225m to 1596m. Gain: 373m. Loss: 113m . Gradient: 11 deg (Moderate-hard)
Skills: Occasional scrambles (3/7)

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

minor (5/5)
A viable route, not widely used

Moderate-hard (difficulty: 4/5)
Continuous moderate climbs

Easy-moderate (difficulty: 2/5)
Tussock / river-gravel / open bush / cut track

Occasional scrambles (difficulty: 3/7)
Tramp with some scrambles and exposure to falls

None (difficulty: 1/6)
No unbridged river crossings

Unknown (difficulty: 0/7)
Not specified

No description

Note: Described in the reverse direction to your journey

From the low point of the ridge north of Pt 1777 climb to the south up steady slopes. These curve up to the east to reach the summit of Pt 1777, but if you don't want to summit scree slopes on the western side can be traversed across, The scree is descent but loose, an ice axe is useful. When the Acheron Lakes come into view, descend down the ridge to the southwest, eventually dropping down tussock slopes to near the lake shore. Follow this round to the southwest corner of the lake where a low valley climbs away from the lake to the southwest.