Landforms and terrestrial features

K12

K12 (mountain): 7,428 m peak in the Saltoro Mountains of the Karakoram, near the Siachen Glacier. Survey-designation name, ~1,978 m prominence, first climbed 1974 by a Japanese expedition; closed to civilian climbing.

K2

K2 (8,611 m), also called the Savage Mountain, is the world's second-highest peak, in the Karakoram on the Pakistan–China border. Named by survey in 1856, first climbed in 1954, first climbed in winter in 2021, and far deadlier than Everest per summit.

Kaba

Kaba (Kaaba) is an active 1,962 m stratovolcano in Bengkulu, Sumatra, Indonesia, on the Sunda Volcanic Arc, with multiple summit craters, 11 confirmed eruptive periods including a fatal 1833 eruption, and last eruption in August 2000.

Kabobo Massif

Kabobo Massif (Mt Kabobo, Misotshi-Kabogo) is a 150-km mountain chain on western Lake Tanganyika, eastern DRC, reaching 2,701 m; an Albertine Rift biodiversity hotspot with endemic species such as the Kabobo Apalis and Rhinolophus willardi, now within Kabobo Natural Reserve.

Kackar Dagi

Kackar Dagi (Kaçkar Dağı), 3,932–3,937 m, is the highest peak of Turkey's Eastern Pontic (Kaçkar) Mountains and the Black Sea region, fourth-highest in Turkey, first climbed in 1846, within Kaçkar Dağları Milli Park (1994).

Kadavu Island

Kadavu Island is a volcanic island in southern Fiji, about 96 km south of Suva, generally the fourth largest in the group, known for the Great Astrolabe Reef and diving.

Kaffeklubben Island

Kaffeklubben Island, officially Inuit Qeqertaat, is a small moraine island off northern Greenland at 83°39′54″N, the world's northernmost land point, 713.5 km from the North Pole; rival islets such as Oodaaq proved to be stranded icebergs.

Kailasa Temple, Ellora

Kailasa Temple (Kailasanatha), Ellora Cave 16: the largest monolithic rock-cut temple in India, carved top-down from basalt under Rashtrakuta king Krishna I (c. 756–773 CE), removing about 200,000 tonnes of rock.

Kala Patthar

Kala Patthar ("black rock") is a 5,545–5,644 m viewpoint on Pumori's south ridge above Gorak Shep, Nepal, the classic spot to see Everest's summit, which is hidden from Everest Base Camp itself.

Kalahari Desert

The Kalahari Desert is a 520,000 km² semi-arid sandy savanna basin in Botswana, Namibia, and South Africa, east of the Namib; a fossil desert of fixed dunes with 100–250 mm rainfall and San occupation over 30,000 years.

Kalsubai (कळसूबाई)

Kalsubai (कळसूबाई शिखर), the Everest of Maharashtra, is a 1,646 m peak in Akola taluka, Ahilyanagar district, in the Western Ghats' Sahyadri range, Maharashtra's highest point, within the Kalsubai Wildlife Sanctuary, with a summit temple and a trek from Bari village.

Kalymnos (Κάλυμνος)

Kalymnos (Κάλυμνος), Greek Dodecanese island between Kos and Leros, famed for sponge diving and over 3,500 rock climbing routes; area 111 km², capital Pothia, incorporated into Greece in 1948.

Kambalny

Kambalny (Камбальный, Kambalnaya Sopka), southernmost stratovolcano of Kamchatka, Russia, 2,116 m; long dormant, it produced its first historical phreatic eruption in March 2017, VEI 3, with ash plumes to 7 km drifting 2,000 km.

Kamchatka Peninsula (Полуостров Камчатка)

Kamchatka Peninsula (Полуостров Камчатка), a 1,200-km peninsula in the Russian Far East between the Pacific and Sea of Okhotsk; ~300 volcanoes (29 active), Klyuchevskaya Sopka 4,750 m, major salmon runs, UNESCO Volcanoes of Kamchatka site, and the 2025 M8.8 earthquake.

Kamet

Kamet (Kang Med, "Burning Mountain") is a 7,756 m Himalayan peak in Uttarakhand, India's third-highest summit, first climbed in 1931 by Frank Smythe's British expedition.

Kami-shima (island, Japan)

Kami-shima (神島) is a populated island where Ise Bay opens to the sea, off central Honshu, Japan, administered by Toba city in Mie Prefecture and home to 440 residents.

Kanaga Island

Kanaga Island, an uninhabited Andreanof island in Alaska's western Aleutians, hosts Kanaga Volcano, a 1,307 m andesitic stratovolcano within the collapsed Mount Kanaton caldera, erupting as recently as 1993-95 and 2023.

Kangaroo Island

Kangaroo Island (Karta, Island of the Dead) is a 4,405 km² island off South Australia, third largest of Australia's islands, first settled by the South Australian Company in 1836, devastated by 2019–20 bushfires.

Kangchenjunga

Kangchenjunga, 8,586 m, is the world's third-highest mountain on the Nepal–Sikkim (India) border; first climbed 25 May 1955 by George Band and Joe Brown, sacred to Sikkimese peoples, with glaciers retreating since 1975.

Kangju Kangri

Kangju Kangri is a 6,725 m peak in the Pangong range, Ladakh, India, its highest summit, with 2,147 m prominence; first climbed in 1983 by an Indo-Tibet Border Police and local army expedition.

Kangtö (eastern asia, WWlists_ultras_china1:1.14)

Kangtö (Kangto, 康格多山), highest peak of Arunachal Pradesh on the India-Tibet McMahon Line, Eastern Himalaya; about 7,042-7,060 m, first climbed by Japanese from Tibet (1981 or 1988), from India in 2025.

Kangze'gyai

Kangze'gyai (团结峰, Tuanjie Peak, Gangzewujie) is the highest peak of the Qilian Mountains, Qinghai, China, about 5,808–5,827 m, an ultra with 2,231 m prominence, first climbed in 1958.

Kanin Peninsula

Kanin Peninsula (полуостров Канин), tundra peninsula in Nenets Autonomous Okrug, NW Russia, between the White and Barents Seas; Timan Ridge extension, discontinuous permafrost, reindeer herding, Cape Kanin Nos.

Kanjiroba

Kanjiroba is a 6,883 m (22,582 ft) mountain in the Kanjiroba Himal of far western Nepal's Dolpa District, the highest peak of that range, first climbed in 1970.

Karabastau Formation

The Karabastau Formation is a Jurassic lacustrine rock unit in the Karatau Range of southern Kazakhstan, among the richest Jurassic insect deposits with more than 800 species.

Karaca Dag

Karaca Dag (Karacadağ, Karacalidag), a broad basaltic shield volcano in SE Turkey near the Syrian border, 1,957 m, ~10,000 km², active since ~11 Ma with Siverek, Karacadağ, and Ovabağ stages; largest circum-Mediterranean anorogenic shield volcano.

Karaginsky Island

Ostrov Karaginskiy, also known as Karaginsky Island, is an uninhabited island in the Karaginsky Gulf of the western Bering Sea off northeastern Kamchatka, from which the Litke Strait separates it.

Karakoram

Karakoram: Central Asian mountain range spanning China, India, Pakistan, Tajikistan and Afghanistan, known for the Karakoram anomaly of stable glaciers, the Karakoram Fault, and the 1,300 km Karakoram Highway.

Karakum Desert

The Karakum Desert (Turkmen: Garagum, "black sand") is a Central Asian sand desert of about 300,000 square kilometers that covers more than 80 percent of Turkmenistan.