GUNUNG · Pakistan

K2

Chhogori / Qogir (Ketu)

Information

Elevation: 8.611 m
Country: Pakistan (PK)
Location / Range: Baltoro Muztagh, Karakoram Range — border of Gilgit-Baltistan (Pakistan) and Xinjiang (China)
Mountain type: Rock pyramid peak (gneiss/marble) — the second-highest mountain in the world, not a volcano
Volcanic?: No (non-volcanic)
Coordinates: 35.8811, 76.5133
Difficulty: Highly technical and extreme — one of the most dangerous and deadly 8,000-m climbs ('Savage Mountain')
Best Season: June–August (Karakoram summer window); winter climbing is extremely rare and extreme
Permits & Rules: Mandatory expedition permit and summit royalty via Pakistan/Gilgit-Baltistan (Alpine Club of Pakistan); generally through an expedition operator, with a liaison officer, porters, and high-altitude support
Hazards: Death zone (>8000 m), seracs and avalanches at the 'Bottleneck' just below the summit, sudden storms, extreme freezing temperatures, technical roped terrain, rockfall, historically high fatality ratio

Description

K2 (8,611 m) is the second-highest mountain on Earth after Everest and the highest peak of the Karakoram range, straddling the border between Gilgit-Baltistan (Pakistan) and Xinjiang (China). Unlike a trekking peak, K2 is true high-altitude mountaineering: a steep rock-and-ice pyramid on every flank, demanding ice and rock skills, fixed ropes, and endurance in the death zone. Its nickname, the 'Savage Mountain', reflects a difficulty and fatality rate among the highest of all 8,000 m peaks. The crux is the 'Bottleneck', a steep couloir roughly 400 m below the summit that sits directly under an overhanging serac band prone to collapse. The summit was first reached by an Italian expedition on 31 July 1954 (Lino Lacedelli and Achille Compagnoni); the first winter ascent came only on 16 January 2021, by a Nepali team. Base camp is reached via a long trek up the Baltoro Glacier from the village of Askole.

Gallery

Foto bersumber dari Wikimedia Commons — klik untuk memperbesar & lihat sumbernya.

Routes

Abruzzi Spur (Punggung Tenggara) — jalur normal

Sangat teknis / ekstrem (zona kematian, tali tetap)

Ekspedisi ~6–8 minggu (termasuk trek pendekatan & aklimatisasi)

Rute klasik dan paling banyak dipakai, dirintis ekspedisi Italia 1954. Naik dari basecamp sisi Pakistan melewati ciri terkenal seperti House's Chimney dan Black Pyramid menuju rangkaian high camp, lalu dorongan summit lewat 'Bottleneck' di bawah dinding serac.

Cesen Route (Spur Selatan-Tenggara / Basque)

Sangat teknis / ekstrem

Ekspedisi ~6–8 minggu

Alternatif punggung di sisi selatan yang dianggap lebih langsung dan relatif lebih terlindung dari jatuhan batu dibanding Abruzzi pada bagian bawah; bergabung dengan jalur normal di high camp atas menuju Bottleneck.

North Ridge (Punggung Utara) — sisi China

Sangat teknis / ekstrem & sangat terpencil

Ekspedisi ~7–9 minggu (akses terpencil)

Jalur dari sisi China (Xinjiang) lewat Lembah Shaksgam yang jauh lebih sulit diakses dan jarang didaki; pendekatan logistik berat melintasi gletser terpencil, untuk ekspedisi berpengalaman.

Safety Statistics

High risk

Aggregated for prevention and awareness — not a casualty list. Read alongside the safety tips below.

12% Fatality rate per successful summit

96 Recorded deaths

800 Summits

Period 1954–2023 · As of Aug 2023: ~800 summits / 96 deaths. Before 2021 the ratio was roughly one death for every four people who reached the summit (~25%); recent waves of mass guided ascents lowered the cumulative ratio. K2 is often called the hardest and second-deadliest eight-thousander. · rate computed from sourced totals

Causes of death

Icefall / serac

💡 The serac above 'the Bottleneck' can collapse without warning. Minimise time beneath it: start the summit push in the early hours and pass before the sun warms the ice.
Source
Severe weather

💡 K2 storms can last for days. Respect the weather window and turnaround time; don't get caught high when conditions deteriorate.
Source
Fall

💡 Steep, exposed terrain makes retreat hard, especially when descending exhausted. Save energy for the descent and stay roped on technical sections.
Source
Avalanche

💡 Snowy slopes are avalanche-prone, especially after storms. Monitor snow conditions and avoid high-risk hours.
Source

Notable incidents

1986 1986 K2 disaster season — 13 deaths

During the summer of 1986, 13 climbers died on K2 across a series of incidents — prolonged storms, exhaustion, and accidents on descent. One of the mountain's deadliest seasons and a classic case study in decision-making at extreme altitude.
Source
2008 2008 K2 disaster — serac collapse in the Bottleneck

On 1–2 August 2008, 11 climbers from several expeditions died in one of K2's worst disasters, many after an ice serac above 'the Bottleneck' collapsed and severed the fixed ropes during the descent. It underscored the danger of bottlenecking at a single chokepoint and the importance of timing discipline.
Source

Statistics source: Source Source

Climbing Experiences

Climbing K2 is nothing like a non-technical high-altitude trek: it is a full multi-week mountaineering expedition with staged acclimatisation between high camps, fixed-rope rock-and-ice terrain, and a summit push through the serac-shadowed 'Bottleneck'. Trip films and reports highlight the tiny weather windows, the hard work of Sherpa and porter teams, the historic first winter ascent of 2021, and the extreme experience of reaching the top without supplemental oxygen.

References

The summary above is compiled from the following sources. Click to explore them yourself.