3,546 articles
Bimini
Bimini: westernmost Bahamas district of North and South Bimini, 50 miles from Florida; Lucayan name meaning small islands; mangrove nurseries, big-game fishing, Resorts World Bimini resort, and the South Bimini shark research station.
Bingham Glacier
Bingham Glacier is a large outlet glacier in Palmer Land on the east coast of the Antarctic Peninsula, flowing east to the Larsen Ice Shelf.
Bioko
Bioko, also known as Fernando Pó, is a volcanic island in the Gulf of Guinea belonging to Equatorial Guinea and situated 32 km southwest of Cameroon.
Birch Mountains
Birch Mountains: isolated forested plateau upland in northern Alberta, Canada, west of the Athabasca River; rises about 400-600 m above boreal plains to roughly 800 m, an Upper Cretaceous erosional remnant with a wildland provincial park and kimberlite field.
Birkenhead Peak
Birkenhead Peak is a 2,506 m summit in the Coast Mountains of British Columbia, northeast of Pemberton, an ultra-prominence peak with 1,781 m of prominence climbed via Microwave Ridge.
Biscoe Islands (landform)
Biscoe Islands: Antarctic island group off the west coast of the Antarctic Peninsula, from Pitt to Barcroft Islands, discovered by John Biscoe on 17-18 February 1832 and named Biscoe's Range by the Enderby firm.
Bishop Rock
Bishop Rock, westernmost rock of the Isles of Scilly, England, site of the 1858 Trinity House lighthouse strengthened in 1887; 49 m tall, automated 1992, famed as the smallest island with a building.
Bismarck Archipelago (landform)
Bismarck Archipelago: volcanic island group northeast of New Guinea in Papua New Guinea, comprising New Britain, New Ireland, and Manus; settled 44,000-39,000 years ago, Lapita homeland, named for Otto von Bismarck in 1884.
Bitterroot Range
Bitterroot Range, also called Bitterroot Mountains, a roughly 450-mile Rocky Mountain range along the Idaho-Montana border; highest point Trapper Peak (10,157 ft), home of the Selway-Bitterroot Wilderness and crossed by Lewis and Clark in 1805.
Black Belt (geological formation)
The Black Belt is a crescent of dark, clayey, alkaline soils across central Alabama and northeastern Mississippi, formed over the Upper Cretaceous Selma Chalk; its native Blackland Prairie has shrunk to under 1 percent, now under active restoration.
Black Coast
Black Coast (Spanish: Black, Costa) is a coast of Palmer Land on the Antarctic Peninsula, listed in the SCAR Composite Gazetteer at 71°45'S, 62°W.
Black Elk Peak
Black Elk Peak, formerly Harney Peak until the 2016 U.S. Board on Geographic Names renaming, is South Dakota's highest summit at 7,242 ft listed (7,231 ft surveyed) and the highest US point east of the Rockies, in the Black Elk Wilderness, Black Hills.
Black Hills
The Black Hills (He Sapa) are a 1.2-million-acre Laramide domal uplift in southwest South Dakota and Wyoming, with a Precambrian granite core, concentric sedimentary rings, Mount Rushmore, Wind and Jewel caves, and unceded Sioux treaty land.
Black Island
Black Island is the name of several islands worldwide, best known being a volcanic island in Antarctica's Ross Archipelago and an island in the Argentine Islands, Graham Coast.
Black Mesa (Oklahoma, Colorado, New Mexico)
Black Mesa: a basalt-capped plateau at the Oklahoma, Colorado, New Mexico corner, Oklahoma's highest point at 4,972.97 feet, and a separate namesake mesa near Española, New Mexico.
Black Mountains (North Carolina)
The Black Mountains are a Blue Ridge range in Yancey and Buncombe counties, western North Carolina, the highest in the eastern United States, crowned by Mount Mitchell at 6,684 feet, with spruce-fir forests and Mount Mitchell State Park.
Black Rock Desert
Black Rock Desert: northwestern Nevada playa of about 200 square miles, former bed of Lake Lahontan, within the Black Rock Desert–High Rock Canyon Emigrant Trails NCA (est. 2000) and site of Burning Man since 1990.
Blake Island
Blake Island, Antarctica: small island in Bone Bay, Trinity Peninsula (63°39'S, 59°02'W), named Blake Islet in 1948 for Midshipman Patrick John Blake of Bransfield's 1819-20 Williams voyage; also Isla Blake and Islote Laura. Distinct from Blake Island, Washington.
Blanca Peak
Blanca Peak, a 14,350-foot (4,374 m) summit in Colorado's Sangre de Cristo Range, is the range's highest peak and Colorado's fourth-highest fourteener, with 5,331 feet of prominence and a Lake Como standard route.
Blancas, Lomas
Lomas Blancas (Sierra Negra), volcano number 357064, is a small late-Pleistocene to Holocene stratovolcano in Chile's Southern Andean Volcanic Arc, 2,268 m high, 15 km SE of Nevado de Longaví, with no known Holocene eruptions.
Blåskimen
Blåskimen is a high, ice-covered island in Queen Maud Land, Antarctica, at the juncture of the Jelbart and Fimbul ice shelves, about 80 km north of Novyy Island.
Block Island
Block Island (Manisses) is a 10-square-mile glacial moraine island and Rhode Island town about 10-12 miles offshore, settled in 1661, home to New Shoreham, the first US offshore wind farm (2016), and heavily conserved land.
Blood Falls
Blood Falls is a red, iron-rich hypersaline brine discharging episodically from the Taylor Glacier terminus into Lake Bonney, McMurdo Dry Valleys, Antarctica. Discovered by Griffith Taylor in 1911; its color comes from oxidizing iron nanospheres, and its ancient marine brine hosts microbes isolated for over a million years.
Blowhole
Blowhole: a hole in a sea cave roof or a vertical shaft venting air and water under wave or barometric pressure; coastal spouting vents (Kiama, Spouting Horn) and Nullarbor karst blowholes, distinct from geysers.
Blowout
A blowout is a saucer-, cup-, or trough-shaped depression carved by wind erosion of a sand deposit where vegetation has declined, occurring chiefly in coastal foredunes and sometimes evolving into parabolic dunes.
Blue Grotto (Capri)
Blue Grotto (Grotta Azzurra), a sea cave on Capri's northwest coast in Anacapri, Italy, famed for blue light from a submerged opening; a Roman nymphaeum of Tiberius, entered by rowboat, closed in rough seas.
Blue hole
Blue hole: a large marine cavern or sinkhole open to the surface, formed in limestone or coral bedrock during ice-age low sea levels. Examples include Belize's Great Blue Hole and the Bahamas' Dean's Blue Hole; anoxic sediments record ancient hurricanes.
Blue Hole (New Mexico)
Blue Hole (Santa Rosa, New Mexico), also called Blue Lake, is a bell-shaped artesian spring-fed sinkhole about 80 feet deep with 62°F water flowing at ~3,000 gpm, a major scuba training site whose cave was sealed after 1976 drownings.
Blue Hole (Red Sea)
Blue Hole (Red Sea): submarine sinkhole near Dahab, Egypt, in Abu Galum reserve; over 100 m deep with the 55 m Arch tunnel; nicknamed the divers' cemetery, with an estimated 130 to 200+ diver deaths, mostly on the Arch.
Blue Mountain Peak
Blue Mountain Peak, Jamaica's highest mountain at 2,256 m in the Blue and John Crow Mountains National Park, a UNESCO World Heritage Site; 2026 GNSS surveys show it tied with Middle Peak at about 2,254 m.