Landforms and terrestrial features

Holtedahlfonna

Holtedahlfonna, also called Plateau Holtedahl, is a 1,375 km2 polythermal ice cap in Haakon VII Land, northwestern Spitsbergen, Svalbard; the second largest on Spitsbergen, it feeds the tidewater glacier Kronebreen and hosts ice core and mass balance monitoring.

Homathko Icefield

Homathko Icefield, formerly Homathko Snowfield, is a 570 km2 icefield in the British Columbia Coast Mountains between the Homathko and Southgate Rivers, 50 km southeast of Mt. Waddington, with Holocene glacier advances, 1990s dam-break floods, and 1957 first crossing.

Hong Kong Island (香港岛)

Hong Kong Island (香港島), 80.68 sq km with Victoria Peak at 552 m, is the island ceded to Britain in 1841–42 during the First Opium War and the original core of the Hong Kong colony.

Honshu (本州)

Honshu (本州) is Japan's largest island, 231,132 km² or 61.15% of the national area, holding about 80% of the population and Tokyo, Osaka, Nagoya, and other major cities.

Hoodoo Mountain

Hoodoo Mountain, British Columbia volcano (not the Oregon ski area): flat-topped peralkaline phonolite-trachyte volcano, 1,850 m, ice-covered, last erupted about 7050 BCE, volume 17.3 cubic kilometers.

Hooker Icefield

Hooker Icefield is an official-named icefield on the British Columbia-Alberta boundary in the Canadian Rockies' Kootenay Land District, about 907 km² with 70 peaks, highest Mount Fryatt at 3361 m, near Hooker, Scott, and Kane glaciers.

Hope Island

Hope Island is the largest of a group of small islands off D'Urville Island at the northeast tip of the Antarctic Peninsula, at 63°03'S 56°50'W, named on Powell's 1822 map, also called Isla Esperanza.

Hormuz Island

Hormuz Island (Rainbow Island) is a 42 km² Iranian salt dome in the Strait of Hormuz, known for iron-oxide red soil, the Red Beach, the medieval Kingdom of Hormuz, and growing tourism.

Horseshoe Bend (Arizona)

Horseshoe Bend (Arizona) is a 270-degree entrenched meander of the Colorado River near Page, in Glen Canyon National Recreation Area, about 1,000 feet deep, formed by plateau uplift, with a City of Page parking lot and Navajo Nation overlook trail.

Horseshoe Canyon Formation

Horseshoe Canyon Formation, Upper Cretaceous (late Campanian–early Maastrichtian) coal-bearing sandstone, siltstone, and mudstone unit in Alberta, Canada; dinosaur-fossil-rich Drumheller Badlands, Edmonton Group, up to 750 m thick.

Horseshoe Island

Horseshoe Island (Isla Herradura) is a small rocky Antarctic island in Marguerite Bay, Fallières Coast, named by Rymill's BGLE in 1936-37 for its crescent shape; it hosted FIDS Base Y (1955-1960), now Historic Site and Monument No. 63, and Farrier Col became ASPA 181 in 2024.

Horsøya

Horsøya (Horsøyna) is the name of several Norwegian islands: one in Øygarden, Vestland (seabird nature reserve, 1987), one in Hitra, Trøndelag (burial cairn, industrial expansion), one in Vega's Muddværet, and one in Frøya.

Hoseason Island

Hoseason Island, Palmer Archipelago, Antarctica; also Hoseason, Isla. Island 6-7 mi long, 3 mi wide, 20 mi west of Trinity Island, named for James Hoseason, first mate of the sealer Sprightly, charted 1824.

Hotaka-dake

Hotaka-dake (穂高岳), also Oku-Hotaka-dake, is a 3,190 m massif in Japan's Northern Alps on the Nagano–Gifu border, the country's third-highest peak, reached via Karasawa Cirque or the Daikiretto ridge from Yarigatake.

Hoverla

Hoverla (Говерла) is Ukraine's highest mountain, 2,061 m, in the Chornohora range of the Ukrainian Carpathians on the Ivano-Frankivsk–Zakarpattia border; a flysch dome with glacial cirques, the Prut River spring, and a popular 1880-established hiking route.

Hovgaard Island

Hovgaard Island (Krogmann Island) is a 3-nautical-mile-long island in the Wilhelm Archipelago, Penola Strait, Antarctica, 1.5 nmi southwest of Booth Island; discovered by Dallmann 1873-74, renamed by Gerlache's Belgian expedition after Danish naval officer Andreas Hovgaard.

Hovgaard Ø

Hovgaard Ø (Hovgaard Island), uninhabited 1,700 km² Greenland island in the Northeast Greenland National Park between Nioghalvfjerdsfjorden and Dijmphna Sund, named for polar explorer Andreas Peter Hovgaard; distinct from the Antarctic Hovgaard Island.

Howe Caverns

Howe Caverns, in Howes Cave, Schoharie County, New York, is a commercial show cave discovered by Lester Howe, formed about six million years ago in Coeymans and Manlius limestone, with a 156-foot elevator descent, River Styx boat ride, and Signature Rock tour.

Howland Island

Howland Island: uninhabited U.S. Pacific island territory, 1.6 km², just north of the equator; guano-mined from 1857, Earhart's 1937 destination, bombed in 1941, now a National Wildlife Refuge.

Howson Peak

Howson Peak, also known as Ts'ihldzïkw, is a 2,759 m mountain in British Columbia, Canada. It is the highest point of the Bulkley Ranges and the Hazelton Mountains.

Hoy, Orkney

Hoy is the second largest Orkney island (57 sq mi, population 416), with Orkney's highest hill Ward Hill (479 m), the 137 m Old Man of Hoy sea stack, the Dwarfie Stane Neolithic tomb, and the Hoy and West Mainland National Scenic Area.

HP Cordillera del Condor

The Cordillera del Cóndor (Quechua: Kuntur walla) is a mountain range in the eastern Andes forming part of the Ecuador-Peru border, about 150 km long and rising to about 2,900 m.

HP Finisterre Range

Finisterre Range (Finisterres), mountain range on the Huon Peninsula, northern Papua New Guinea, between the Ramu-Markham valleys and the Bismarck Sea coast. Highest peak Mount Boising (Mount Gladstone), about 4,150-4,175 m, first climbed 2014; actively colliding Oligocene island-arc terrane with 0.8-2.1 mm/yr uplift.

HP Helan Shan

HP Helan Shan (Helan Mountains, 贺兰山) is a ~200 km mountain range on the Ningxia–Inner Mongolia border, peaking at 3,556 m, separating the Yinchuan Plain from desert, with Quaternary tectonic uplift, Helankou rock art, a nature reserve, and a major wine region on its eastern foothills.