Hamilton Hut

Summer is the best season for this track

Because of the high avalanche danger and the frequency of winter snowfalls, this route is best attempted from late spring to early autumn. There is simple avalanche terrain on the Cass-Lagoon Saddle Track from Bealey Hut to Hamilton Hut, and complex avalanche terrain from the Cass River SH73 road end to Hamilton Hut. All times are one way unless otherwise stated.

Cass Saddle Hut to Hamilton Hut

Time: 2 hours 30 minutes one way

The tussock basin above Cass Saddle Hut is reached shortly after leaving the hut, and the poled route climbs gradually to the saddle. Hamilton Hut can be seen in the distance down the valley. Traverse left for 200 metres to the start of the cut track. This is an area of high avalanche risk. Avalanches frequently cross the entire Cass Saddle area in winter. During heavy snow conditions, we advise visitors not to travel this route. The track drops steeply from the saddle, and then more gently through the bush terraces, joining Hamilton Creek 15 minutes from Hamilton Hut. The 20 bunk hut has a wood burning stove and a radio linked to Arthur's Pass Visitor Centre. Calls can be made during office hours to obtain weather forecasts.

Side trip: The Pinnacles

Time: 4–6 hours return

In the lower Harper valley, erosion has formed an interesting geological feature that makes a worthwhile side trip from Hamilton Hut. The Pinnacles were made from geologically young rock, about 3–7 million years ago, consisting of alluvial sands and gravels. Erosion, caused by rain water washing away the exposed soil, has formed the pinnacle shapes. Pebbles or small stones may be seen on the tops of the pinnacles, temporarily protecting them from erosion. Nearby, the Harper River has exposed older rocks containing marine fossils. The route to The Pinnacles is down the Harper River from Hamilton Creek, following the Te Araroa Trail, initially on a walking track, then a 4WD track. The Harper River needs to be crossed several times – crossings should not be attempted if the river is high. The 4WD track crosses private farmland; please do not disturb any stock. The Pinnacles are set back a short way on the true right bank.

Hamilton Hut to West Harper Hut

Time: 2 hours 30 minutes one way

From Hamilton Hut to Bealey Hut, you are in simple avalanche terrain. Even though the track is in the forest, avalanches can reach the track from the mountains above. The greatest risk in this section is from Harper River to Lagoon Saddle Hut, as avalanches can travel from the Mt Bruce ridges to the track. Read more about avalanche risk in the Know Before You Go section or on this webpage . The route crosses Hamilton Creek at the footbridge 10 minutes downstream from Hamilton Hut and leads to a swing bridge across Harper River, a short distance above its confluence with Hamilton Creek. After crossing the swing bridge, the route continues upstream on the true right of the river to West Harper Hut. In fine weather and suitable conditions, the riverbed offers an easy alternative with several fine swimming holes along the way. West Harper Hut (a hut built in the 1950s) has five canvas bunks, a fireplace and a dirt floor.