Location and surroundings
Mount Hack is a peak in the Gammon Ranges, part of the wider Flinders Lofty Block in South Australia, Australia. It is the highest of the 51 named peaks in the Gammon Ranges, and the range itself has Mount Hack as its high point. The mountain sits in the locality of Warraweena, in open inland country shaped by ridges, hills, and dry valleys.
The terrain around the summit is rugged but not alpine in the usual sense. Expect stony slopes, sparse vegetation, and long views across a low, arid mountain landscape. In this part of South Australia, travel is usually by foot on rough ground, with heat, sun, and limited water more important than snow or ice.
Neighbouring peaks
- Yarnngarri Arraindanha Vambata — 1,044 m, 0.0 km W
- Beacon Hill — 1,003 m, 1.3 km E
- Mount Charlie — 708 m, 4.9 km NW
- Cocks Comb — 786 m, 8.6 km SE
- Mocatoona Hill — 905 m, 8.6 km NW
- Angepena Hill — 719 m, 8.6 km N
- Mount Andre — 975 m, 10.0 km SE
- Mount Tilley — 634 m, 10.5 km S
Mount Hack is closely surrounded by other named high points, especially Yarnngarri Arraindanha Vambata immediately to the west and Beacon Hill to the east. Several nearby hills are lower by a wide margin, so the summit remains one of the main high points in this part of the range.
The view from the summit
Within 25 km, the higher or notable peaks include Mount Gill to the southwest at 914 m, Mount Stuart to the west at 881 m, Mount Wallace to the north at 880 m, Patawarta Hill to the south at 899 m, Campbell Bald Hill to the northeast at 845 m, and Mount Uro to the east at 810 m. These are the main ridges and summits that shape the wider skyline around Mount Hack.
From the top, the outlook is likely to be across a sequence of dry ranges and intervening valleys rather than a single dominant massif. The nearest high ground is part of the same upland system, so the summit view is more about layered hills and broken country than distant alpine peaks.
The range
Mount Hack belongs to the Gammon Ranges, which are the high point of the range system they form. The Gammon Ranges contain 51 named peaks, and Mount Hack ranks first by elevation among them. The range is part of the broader Flinders Lofty Block in Australia.
This ranking makes the mountain a key summit in the range, even though the surrounding country is remote and lightly populated. For visitors interested in the structure of the range, Mount Hack is the reference point for the highest ground in the Gammon Ranges.
Climate and weather
Climate estimates from NASA POWER for 2001–2020 suggest that the summit is warmest in January, at about 24 °C, and coldest in June, at about 7 °C. The surrounding area receives about 200 mm of precipitation a year, with the wettest month in February at about 25 mm and the driest in March at about 10 mm.
At this elevation in inland South Australia, the main weather concerns are heat, strong sun, dry air, and sudden changes from wind or brief rain. After rain, tracks and gullies can become slippery, but long periods of dry weather are more typical than persistent wet conditions.
Best time to visit
All months are above freezing at the summit, but the more comfortable periods are usually the cooler parts of the year, especially when daytime heat is lower and water demand is easier to manage. The driest stretch is around March, while February is the wettest month, though rainfall remains low overall.
For a climb on foot, many visitors would prefer the milder months rather than the hottest summer period. Even then, the dry inland climate means early starts, sun protection, and enough water are important throughout the year.
Nature and wildlife
The Gammon Ranges are part of a dry inland Australian landscape, so the slopes around Mount Hack are likely to carry sparse shrubs, grasses, and hardy rock-dwelling plants rather than dense forest. The terrain is open, stony, and exposed, with vegetation adapted to low rainfall and heat.
Wildlife in this region commonly includes birds, reptiles, and small mammals suited to arid country. On the ground, hikers should expect rough rock, loose stones, and limited shade. The mountain’s ecology is shaped more by drought and sun than by snow or alpine cold.
Guides and organised ascents
For a mountain like Mount Hack, a certified guide is usually not essential for experienced hikers, but it can be useful for visitors unfamiliar with remote Australian terrain, navigation, heat management, or rough ground. In Australia, the national mountain guide association is the Australian Climbing Instructors' Association, which is not an IFMGA/UIAGM member. A well-known guiding company in the country is High and Wild in Katoomba, which works in the mountains of Australia.
Organised ascents in this kind of country usually focus on route-finding, pacing, water planning, and safety rather than technical climbing. If you hire a guide, the cost generally depends on trip length, group size, equipment needs, and whether any overnight camping is involved.
Safety and preparation
Mount Hack is a dry inland peak, so preparation should focus on heat, sun exposure, navigation, and carrying enough water. Good footwear, a map, and the ability to cope with rough ground are more important than glacier gear or winter equipment. Even at this moderate elevation, the open terrain can feel demanding in hot weather.
For mountain rescue in Australia, the emergency number is 000; 112 also works from mobile phones. Because reception can vary in remote hills, it is wise to download maps before setting out and to tell someone your plan.
History and name
The mountain was named after Stephen Hack, the younger brother of John Barton Hack, according to Chequered Lives. It is also known by several other names, including Yarnngarri Arraindanha Vambata, Gora Khak, Khak, and forms written in other scripts.
Those alternative names reflect different linguistic and transliteration traditions for the same peak. In modern English usage, Mount Hack remains the most familiar form.
Interesting facts
Mount Hack is the highest of the 51 named peaks in the Gammon Ranges, and it is the range high point. The nearest named peak is Yarnngarri Arraindanha Vambata, which lies immediately to the west and is only slightly lower at 1,044 m.
Another useful reference is Beacon Hill, 1.3 km to the east at 1,003 m. The mountain’s position in the range makes it a central summit for understanding the topography of the Gammon Ranges.
FAQ
How high is Mount Hack? It rises to 1,086 m.
Where is Mount Hack? It is in the Gammon Ranges of South Australia, Australia, in the locality of Warraweena.
Is Mount Hack the highest mountain in the Gammon Ranges? Yes. It is the highest point of the Gammon Ranges and the highest of their 51 named peaks.
What are the nearest peaks to Mount Hack? The closest named summit is Yarnngarri Arraindanha Vambata immediately to the west, and Beacon Hill is 1.3 km to the east.
Is there water on the way to Mount Hack? In this dry inland country, you should plan to carry your own water. For a day outing, 1.5-3 litres per person is a sensible range depending on heat and route length.
Are there huts on Mount Hack? OpenStreetMap shows no hut or shelter within 2 km of the top, so hikers usually plan the ascent as a day trip or carry their own tent.
How is mobile phone coverage? Coverage in the hills is patchy and depends on the operator. 112 reaches emergency services over any available network, and maps should be downloaded before setting out.