3,546 articles
Sumba
Sumba (Pulau Sumba), an island in East Nusa Tenggara, Indonesia, known for its living megalithic Marapu tomb tradition, Sandelwood horses, and its Iconic Island renewable energy program.
Sumbawa
Sumbawa is an Indonesian island in the Lesser Sunda Islands, West Nusa Tenggara, between Lombok and Flores, home to Mount Tambora, source of the 1815 largest explosive eruption, and the proposed Samota economic zone.
Sumbing (gunung sumbing)
Sumbing (Gunung Sumbing), Central Java stratovolcano, 3,370 m, twin of Sundoro; last erupted about 1730 CE (VEI 1); 2008 eruption report was false; distinct from Sumatra's Sumbing.
Sump (cave)
Sump (cave): a completely water-filled section of cave passage, also called a siphon. Passed by breath-hold free diving or cave diving; Pozo Azul Sump 2 (5,160 m) is the longest known.
Sundoro
Sundoro (Gunung Sundoro, also Sindoro or Sindara) is a symmetrical active stratovolcano, 3,149 m, in Central Java, Indonesia, between the Dieng complex and Sumbing; last erupted 1971, with twelve eruptive groups since 34 ka.
Sunset Boulevard
Sunset Boulevard is a major east-west Los Angeles thoroughfare from Pacific Coast Highway to Figueroa Street, tied to Hollywood's film industry, the 1950 Billy Wilder film, the Lloyd Webber musical, and ongoing road-safety redesign campaigns.
Suntar-Khayata Range
Suntar-Khayata Range (Сунтар-Хаята), a 450 km mountain range in northeastern Siberia dividing Arctic Ocean and Sea of Okhotsk drainages; highest peak Mus-Khaya 2959 m, with about 195 glaciers covering 163 km2, the largest glaciation in Siberia.
Süntel Formation
Süntel Formation, Upper Jurassic (Kimmeridgian, about 156-151 Ma) limestone and marl unit of the Lower Saxony Basin, northern Germany; type area the Süntel ridge; yields Europasaurus and Jurassic mammals at Langenberg Quarry.
Superstition Mountains
The Superstition Mountains are a volcanic range about 60 km east of Phoenix, Arizona, formed of ash-flow tuff erupted roughly 25 to 15 million years ago, home to the 160,115-acre Superstition Wilderness and Weaver's Needle.
Suphan Dagi
Suphan Dagi (Süphan Dağı, Sîpanê Xelatê) is a dormant stratovolcano north of Lake Van, Turkey's third highest peak at 4,058 m, Pleistocene eruptions, retreating summit glaciers.
Supraglacial lake
Supraglacial lakes are meltwater ponds on glacier and ice-sheet surfaces in Greenland and Antarctica. They store runoff, drain by hydrofracture or overflow, modulate ice flow, and can trigger ice-shelf breakup.
Surtsey
Surtsey is a volcanic island about 32 km off Iceland's south coast, formed by eruptions from 1963 to 1967 and protected since birth as a pristine natural laboratory for studying biological colonization of new land.
Surtshellir
Surtshellir is a lava tube cave about 1,600 m long in the Hallmundarhraun lava field of western Iceland, containing a Viking Age archaeological site once thought an outlaw shelter.
Survex
Survex is a free, open-source cave surveying package started in 1990 by Olly Betts and Wookey, with the cavern processor and aven viewer, native .svx data, and Therion loop-closure integration.
Susan Island
Susan Island: name shared by several islands, chiefly a rainforest river island in the Clarence River at Grafton, NSW, Australia, and an official island in the Coast Land District, British Columbia; also islands in Guyana, the Philippines, and New York.
Svalbard
Svalbard, historically Spitzbergen, is a Norwegian Arctic archipelago more than 800 km north of the mainland, placed under Norwegian sovereignty by the Svalbard Treaty of 1920.
Swat Valley (وادی سوات)
Swat Valley (وادی سوات), also Udyana or Suvastu, is a river valley in Khyber Pakhtunkhwa, Pakistan, along the Swat River from Kalam's glaciers; a former Gandharan Buddhist center, now a major tourist destination.
Sweeney Mountains
Sweeney Mountains: mountain group about 40 mi long in eastern Ellsworth Land, Antarctica, 30 mi north of the Hauberg Mountains at 75°06'S 69°15'W. Discovered by the Ronne Antarctic Research Expedition 1947-48 and named for Mrs. Edward C. Sweeney.
Swinburne Islet
Swinburne Islet is a small islet in North Coast Regional District, British Columbia, Canada, near Pacofi off Alford Point on Moresby Island, Haida Gwaii; elevation 9 m, used as a transit for anchorage in Pacofi Bay.
Swiss Alps
Swiss Alps: the Swiss portion of the Alpine range covering about 60% of Switzerland, with 48 peaks over 4,000 m, Dufourspitze (4,634 m), the 23 km Aletsch Glacier, and rapid glacier loss from climate change.
Sylt
Sylt is a North Sea barrier island in Schleswig-Holstein, Germany, up to 40 km long, famed for beaches, resorts, and the Sölring Frisian dialect. Its eroding west coast receives about 1.2 million m³ of nourishment sand yearly, 41.5 million m³ cumulatively from 1972 to 2011.
Syrian Desert
The Syrian Desert (Badiyat ash-Sham) is a 500,000 km² arid tableland spanning Syria, Jordan, Iraq, and Saudi Arabia, crossed by Bronze Age caravan routes and Palmyra trade roads, now heavily affected by desertification and drought.
Syue Shan
Syue Shan (雪山, Xueshan, Snow Mountain), Taiwan's second highest peak at 3,886 m in Shei-Pa National Park; highest point of the Xueshan Range, ranked #2 of the Baiyue, with glacial cirques and winter snow-season permits.
Taapaca
Taapaca (Nevados de Putre), dacitic lava-dome complex and andesitic stratovolcano, 5,860 m, NE of Putre, northern Chile; active 1.5 Ma, last eruption ~320 BCE, dormant but monitored.
Tabarin Peninsula
Tabarin Peninsula: eastern extremity of Trinity Peninsula, northern Antarctic Peninsula, between Duse Bay and Antarctic Sound; named 1946 after Operation Tabarin; sites include Hope Bay and Esperanza Base.
Tablas Island
Tablas Island, formerly Osigan, is the largest island of Romblon province, Philippines, in the Sibuyan Sea between Mindoro and Panay; 693.74 km², nine municipalities, renamed Tablas by Loarca in 1582.
Table Island
Table Island, South Shetland Islands, Antarctica: island northwest of Fort William, Robert Island, at 62°20'34.8"S 59°48'29.7"W; charted by Bransfield in 1820 as Falcon Island and renamed by sealers for its shape.
Table Mountain
Table Mountain (Khoi: Hoerikwaggo, Mountain in the Sea) is Cape Town's 1,088 m flat-topped sandstone landmark, first climbed in 1503, core of Table Mountain National Park and the Cape Floral Region World Heritage Site.
Tacana
Tacana (Volcan Tacana) is a 4,064 m stratovolcano on the Mexico-Guatemala border, the northernmost volcano of the Central American Volcanic Arc; last phreatic eruption 1986, UNESCO biosphere reserve since 2006.
Tahiti
Tahiti, largest island of French Polynesia in the Society Islands, South Pacific; capital Papeete, gateway airport Faa'a. Ceded to France by Pomare V in 1880; nuclear test site 1966–1996; major tourism hub.