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Groote Eylandt
Groote Eylandt: island in Australia's Gulf of Carpentaria, Northern Territory, 2,285 km2, fourth largest Australian island, homeland of the Anindilyakwa people and site of the GEMCO manganese mine, operating since 1965.
Grossglockner
Grossglockner (German: Großglockner), also known as Veliki Klek, is at 3,798 meters the highest mountain in Austria, first climbed in 1800, with the Pasterze glacier at its foot.
Grotta Trinità
Grotta Trinità, or Grotta della Trinità, names Italian cave religious sites: a ruined hermitage church in a cave at Furore on the Amalfi Coast known since 1138, and an excavated cave near Ruffano, Lecce, an Italo-Greek asceterio later titled Santissima Trinità.
Grotto
A grotto is a small cave, natural or artificial, or a cave-like structure built for shelter, worship, display, or pleasure, such as garden chambers and Buddhist cave temples.
Grotto (National Speleological Society)
A grotto is a local chapter or caving club of the National Speleological Society (NSS), founded 1941. Over 250 grottos exist, chartered with NSS-approved bylaws and five NSS members, grouped into regions.
Grounding line
A grounding line is the boundary where a glacier or ice sheet resting on bedrock loses contact with the ground and starts to float on seawater as an ice shelf or floating tongue.
Group of Monuments at Mahabalipuram
Group of Monuments at Mahabalipuram (Mamallapuram), a 1984 UNESCO serial World Heritage Site in Tamil Nadu: 7th-8th century Pallava rathas, mandapas, the Descent of the Ganges relief, and the Shore Temple.
Gruening Glacier
Gruening Glacier (Spanish: Gruening, glaciar; Gruening, Ventisquero) is a broad valley glacier on the east coast of Palmer Land, Antarctica, flowing southeast into Hilton Inlet; discovered by the USAS in 1940 and named for Ernest H. Gruening.
Grünbach Formation
Grünbach Formation (Grünbach-Formation), coal-bearing clastic unit of the Gosau Group in Lower Austria; upper Santonian to lower Campanian, terrestrial-deltaic with marine incursions, source of the Grünbach flora and historic coal mining.
Guadalcanal
Guadalcanal (Isatabu) is the largest island of Solomon Islands, home to capital Honiara and Mt. Popomanaseu (2,449 m); named in 1568 by the Mendaña expedition, site of the WWII Henderson Field campaign and the 1998–2003 tensions, now under heavy logging pressure.
Guadalupe Island
Guadalupe Island (Isla Guadalupe), a volcanic island 250 km off Baja California, Mexico, decreed a biosphere reserve in 2005; endemic-rich flora, Guadalupe fur seal and elephant seal colonies, white shark aggregation, closed to tourism since January 2023.
Guadalupe Peak
Guadalupe Peak, also called Signal Peak, is the highest natural point in Texas at 8,751 feet, in Guadalupe Mountains National Park, Culberson County; its summit trail gains 3,000 feet over 8.4 miles.
Guagua Pichincha
Guagua Pichincha, active dacitic stratovolcano of the Ecuadorian Andes, 10-12 km west of Quito, 4,784 m high; largest historical eruption 1660 (30 cm ash in Quito), latest eruptive phase 1999-2001, monitored by IG-EPN.
Guajira Peninsula
Guajira Peninsula: semi-arid peninsula at the northernmost tip of South America, shared by Colombia and Venezuela, homeland of the Wayuu people, with South America's best wind resource, Cerrejón coal, and gas fields.
Guallatiri
Guallatiri (Punata in Aymara) is an active ice-capped stratovolcano, 6,071-6,073 m, on the Chile-Bolivia border in the Nevados de Quimsachata; last erupted 1960, persistent fumaroles, third-highest risk in northern Chile.
Guayaques
Guayaques (Cerros de Guayaques), volcano number 355093, is a 10-km chain of rhyodacitic lava domes, 5,598 m high, straddling the Chile-Bolivia border east of the Purico pyroclastic shield, with no historical eruptions.
Gudbrandsdalen
Gudbrandsdalen, a 200 km valley in Innlandet, Norway, drained by Gudbrandsdalslågen from Lesjaskogsvatnet to Mjøsa; named after chieftain Dale-Gudbrand, historic Oslo-Trondheim route, pilgrim trail, Peer Gynt country.
Gugu
Gugu (Gamsari, Monte Gugu), a 3,623 m mountain in Arsi Zone, Oromia, Ethiopia, at 8°12′N 39°58′E, part of the Gugu and Chillalo massifs of the Arsi plateau; its afro-alpine Gugu Mountain Ranges lost over half their habitat between 1989 and 2019. Distinct from Mount Gugu in Gamo Zone.
Guiana Highlands (range/mtn)
Guiana Highlands: tableland of sandstone tepuis in northern South America (Venezuela, Guyana, northern Brazil) on the Precambrian Guiana Shield; Mount Roraima 2810 m, over 60 tepuis, Angel Falls, Pantepui endemism.
Guimaras Island
Guimaras Island is an island province in Western Visayas, Philippines, between Panay and Negros in the Panay Gulf. Five municipalities, 604.57 sq km, province since 1992, famed for mangoes.
Guinea Highlands
Guinea Highlands: mountainous region of West Africa centered in Guinea, with summits over 1,500 m, source of the Niger River, driver of the offshore rainfall maximum, and part of the Upper Guinea forest ecosystem.
Gulliver Nunatak
Gulliver Nunatak, a 575 m flat-topped ice-free nunatak on the north side of Adie Inlet, east Graham Land, Antarctica (66°12′S 62°40′W), near the Gulliver's Travels-themed Lilliput and Laputa nunataks.
Guna Caves
Guna Caves, formerly Devil's Kitchen, are dangerous bat-infested chambers between the Pillar Rocks near Kodaikanal, Tamil Nadu, renamed after Kamal Haasan's 1991 film Gunaa and closed to entry after fatal falls.
Guna Caves rescue
The 2006 Guna Caves rescue at Kodaikanal, Tamil Nadu (Devil's Kitchen): Subhash Chandran of Manjummel, Kerala fell into a deep pit and was pulled out alive by friend Siju David after police gave up; basis of the film Manjummel Boys.
Gunong Yong Belar
Gunong Yong Belar (Gunung Yong Belar), 2,181 m, is Malaysia's third highest peninsula peak, second highest in the Titiwangsa range, on the Kelantan-Perak border, a G7 hike from Lojing.
Gunung Abong Abong
Gunung Abong Abong (Gunung Abeuengabeueng, Mount Abongabong) is a 2,985 m stratovolcano peak in Nagan Raya Regency, Aceh, Sumatra, Indonesia, part of the Bukit Barisan range, with 1,104 m prominence and a Dutch-era triangulation pillar (P.127) on its summit.
Gunung Benum
Gunung Benum (Gunung Benom), a 2,107 m ultra-prominent mountain in Pahang, Peninsular Malaysia; third most prominent peak on the peninsula after Gunung Tahan and Gunung Korbu, a standalone massif with a multi-day jungle trek.
Gunung Binaiya
Gunung Binaiya (Binaya, Binaija), 3,027 m, is the highest mountain of the Maluku Islands, a karst peak on Seram Island in Manusela National Park and one of the Seven Summits of Indonesia; the climb takes 7–10 days from near sea level.
Gunung Cikuray
Gunung Cikuray (Gunung Cikurai) is a 2,821 m stratovolcano in Garut Regency, West Java, Indonesia, the fourth highest in the province, with no active crater, no recorded Holocene eruptions, and popular Tapak Gerot and Pemancar hiking routes.
Gunung Kapalatmada
Gunung Kapalatmada (also Kakupalatmada, Kaku Ghegan) is the highest point of Buru island, Maluku, Indonesia, at about 2,683-2,700 m with equal prominence, an ultra and Ribu, largely unclimbed.