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Scarborough Shoal
Scarborough Shoal (Huangyan Dao; Panatag Shoal; Bajo de Masinloc) is the South China Sea's largest atoll, ~150 km², inside the Philippine EEZ, claimed by China, the Philippines, and Taiwan, seized by China in 2012, and the subject of the 2016 arbitral ruling and 2023-2026 enforcement escalations.
Scărișoara Cave
Scărișoara Cave (Peștera Scărișoara), an ice cave in Romania's Apuseni Mountains at 1,165 m, hosts a 100,000 m³, 22.5 m thick perennial ice block used as a paleoclimate archive.
Schilthorn
Schilthorn, a 2,970 m Bernese Alps summit above Mürren, Switzerland, site of the Piz Gloria revolving restaurant and the 7 km Stechelberg cableway, filmed as the James Bond villain's base in On Her Majesty's Secret Service (1969), and a long-running alpine permafrost monitoring site.
Scott Mountains
Scott Mountains: isolated peaks south of Amundsen Bay, Enderby Land, East Antarctica (67°30'S, 50°30'E), discovered 13 January 1930 by Mawson's BANZARE as Scott Range, named for Captain Robert F. Scott; distinct from a California range of the same name.
Scottish Highlands
Scottish Highlands: mountainous region of Scotland north and west of the Highland Boundary Fault, containing the Grampian Mountains and Ben Nevis, shaped by glaciation, the Highland Clearances, and a natural-capital-based economy.
Scrubland
Scrubland, also called shrubland, is land dominated by low shrubs and small trees, typically under 5 m tall with over 20% shrub cover. It sits between grassland and woodland, covers up to 40% of land with related open ecosystems, and is stabilized or created by fire feedbacks.
Sea cave
Sea cave (littoral cave): a hollow eroded in a coastal cliff by wave attack along faults, joints, or soft layers; part of the cave-arch-stack erosion sequence, distinct from dissolutional flank margin caves.
Sea caves of the Na Pali Coast
The sea caves of the Na Pali Coast are wave-cut caverns and collapsed lava tubes in Kauai's basalt cliffs, Hawaii, including Waiahuakua and the Open Ceiling Cave.
Sea Island, Georgia
Sea Island, Georgia: private resort barrier island in Glynn County, linked by causeway to St. Simons Island. Developed by Howard Coffin from 1926 around The Cloister; 2,000 acres, Forbes Five-Star hotels, G8 2004 site.
Sea Islands
Sea Islands: chain of tidal and barrier islands on the South Carolina, Georgia, and northern Florida Atlantic coast, home of rice, indigo, and Sea Island cotton plantations and the Gullah Geechee people.
Seacoast Region (New Hampshire)
Seacoast Region, New Hampshire: the state's 18-mile Atlantic coast and Great Bay estuary across Rockingham and Strafford counties, centered on Portsmouth, its colonial capital and historic Navy shipyard hub.
Seal Islands
Seal Islands: a group of small islands and rocks 3–6 nautical miles northwest of Elephant Island, South Shetland Islands, Antarctica, charted by Bransfield in 1820 and named by William Smith for the seals caught there.
Seal Nunataks
Seal Nunataks: chain of 16 volcanic nunataks on the Larsen Ice Shelf, east Antarctic Peninsula, discovered by Larsen in 1893; post-subduction alkali basalt vents with reported historical activity.
Seashore
Seashore: the land along the edge of the sea or ocean, usually sandy or rocky; in law the land between high- and low-water marks. Shaped by waves, tides, erosion, and sea-level change.
Seasteading
Seasteading is the concept of building permanent dwellings at sea, called seasteads, outside any government's territory, promoted since 2008 by the Seasteading Institute, founded by Patri Friedman and Peter Thiel.
Seiland
Seiland (Northern Sámi: Sievju) is a rocky Norwegian island in Finnmark, southwest of Hammerfest, with an area of 584 km² that makes it the seventh-largest island on the Norwegian mainland.
Selayar Island
Selayar Island (Pulau Selayar), a roughly 80 km long island off southern South Sulawesi, Indonesia; main island of Selayar Islands Regency, historic cotton and spice-trade hub, home of the world's largest Dongson bronze drum, and gateway to Taka Bonerate National Park, the world's third-largest atoll.
Selitrennoye mollusks Formation
Selitrennoye mollusk fauna (Селитренное), a Late Pleistocene Hyrcanian-stage (107 ± 7 ka) fossil assemblage near Astrakhan, Russia: 24 gastropod and 13 bivalve species, 99% endemic, a natural baseline for pre-invasive Caspian Sea faunas.
Selwyn Mountains (range/mtn, Australia)
Selwyn Range (Selwyn Mountains), rugged Proterozoic mountain range near Mount Isa and Cloncurry, north-west Queensland, Australia; named after surveyor Alfred Selwyn, crossed by Burke and Wills in 1861, and a copper-gold-lead-zinc mining district.
Selwyn Mountains (range/mtn, Canada)
The Selwyn Mountains are a mountain range of the northern Canadian Cordillera lying near the western border of the Northwest Territories and extending into Yukon, beside the Mackenzie Mountains.
Semionova Tien-Shanskogo (HP Ala-Archa)
Semionova Tien-Shanskogo (пик Семёнова-Тянь-Шаньского), also Ala-Archa High Point, is a 4,895 m ultra-prominent peak in Kyrgyzstan's Kyrgyz Ala-Too Range, its highest point, in Ala-Archa National Park, first climbed in 1950.
Senja
Senja (Sážža) is Norway's second largest mainland island, in Troms, 1,586 km², ~7,500 inhabitants, home to the 102-km Norwegian Scenic Route Senja, Ånderdalen National Park, and Kaperdalen Sami heritage.
Senkaku Islands (尖閣諸島)
Senkaku Islands (尖閣諸島), also Diaoyu/Diaoyutai: uninhabited East China Sea islets in Ishigaki City, Okinawa, incorporated by Japan in 1895, administered by Japan but claimed by China and Taiwan, source of ongoing coast guard standoffs.
Sentosa
Sentosa is a 500-hectare resort island at Singapore's southern tip, formerly Pulau Blakang Mati, developed from 1972 by SDC. Known for beaches, Resorts World Sentosa, Universal Studios Singapore, Fort Siloso, and the Greater Sentosa Master Plan with Pulau Brani.
Sepu Kangri
Sepu Kangri (色浦岗日), the Great White Snow God, is a 6,956 m ultra-prominent peak in the Nyainqentanglha Mountains of eastern Tibet, first climbed on 2 October 2002 by Mark Newcomb and Carlos Buhler after failed Bonington expeditions.
Serac
Serac: a large block or tower of glacier ice, taller than broad, formed where crevasses intersect in icefalls; from Swiss French sérac, a cheese; a major mountaineering hazard.
Seram Island
Seram Island (Nusa Ina, Mother Island), largest island of Indonesia's Maluku province at about 17,100 km2, site of the Nunusaku origin legend, Manusela National Park, and the producing Seram hydrocarbon basin.
Serra da Estrela
Serra da Estrela, or Estrela Mountains, is a granite mountain range in east-central Portugal whose Torre summit, at 1,993 m, is the highest point in mainland Portugal.
Serra da Ibiapaba
Serra da Ibiapaba (Serra Grande) is a ~380 km cuesta plateau on the Ceará–Piauí border in northeastern Brazil, with a humid forested east face above 1,100 mm rainfall, the 1.6-million-hectare APA created in 1996, and the 164 km Caminhos da Ibiapaba trail.
Serra de Curupira
Serra de Curupira (Sierra Curupira) is a mountain range on the Brazil–Venezuela border in the northern Amazon, part of the Guiana Highlands; it feeds the Içana River and includes heights near 2,105–2,349 m.