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Rujm al-Malfouf
Rujm al-Malfouf, also spelled Rujm el-Malfuf, is an Iron Age round tower of the Ammonite plateau in Amman, Jordan, one of the largest and best preserved of the region's towers.
Rujm el-Farideyyeh
Rujm el-Farideyyeh (Rujm al-Faridiyya) was a Roman-period castrum on the Via Nova Traiana in Tafilah Governorate, Jordan, at mile 58 from Petra; a 45 m ashlar fort dated 30 BC to AD 300, bulldozed between 2013 and 2017.
Rujm el-Hiri
Rujm el-Hiri, also known as Gilgal Refaim, is a large megalithic stone circle on a basalt plateau in the Golan Heights, over 150 m across.
Rukwa (district)
Rukwa is a region in southwestern Tanzania, capital Sumbawanga, divided into Sumbawanga, Nkasi, and Kalambo districts; 1,540,519 residents in the 2022 census, area 27,765 km², created in 1974.
Rukwa (landform)
Rukwa (landform): Lake Rukwa, a shallow alkaline outlet-less rift lake in southwestern Tanzania, in the Rukwa Rift of the East African Rift system; about 3 m deep, seismically active, Tanzania's third largest fishery.
Rule of thirds (diving)
Rule of thirds (diving): cave diving gas planning rule, one third of breathing gas in, one third out, one third reserve; turn pressure at two thirds of starting pressure; from Sheck Exley's 1979 Blueprint for Survival.
Rumailah, UAE
Rumailah, also written Rumeilah (Arabic الرميلة), is an archaeological settlement mound at Al Ain in Abu Dhabi, UAE, mainly an Iron Age village of mud-brick houses.
Rumaki (Rufiji-Mafia-Kibiti-Kilwa) Biosphere Reserve
RUMAKI (Rufiji-Mafia-Kibiti-Kilwa) Biosphere Reserve, a UNESCO MAB reserve designated in 2023 on Tanzania's south-eastern coast, spanning 1,054,095 ha around Mafia Island and the Rufiji Delta, including Tanzania's first marine park.
Rumelia
Rumelia (Ottoman Turkish Rumeli, "land of the Romans") was the Ottoman name for its Balkan territories and chief European province, established 1362, shrinking after 1699, with Eastern Rumelia autonomous 1878–1885.
Runcorn
Runcorn is a Cheshire town on the Mersey at the Runcorn Gap, first recorded as Aethelflaed's 915 burh, later a canal port and chemical town, designated a New Town in 1964, population about 61,000 in 2021.
Rundāles Novads
Rundāles Novads (Rundāle Municipality), a Latvian municipality in Zemgale of Rundāle, Svitene and Viesturu parishes, 2009–2021, centered on Pilsrundāle and Rundāle Palace; merged into Bauska Municipality on 1 July 2021 despite 95.68% resident opposition.
Rungra People's Pleasure Ground
Rungra People's Pleasure Ground (릉라인민유원지), also called Rungna People's Pleasure Ground, is an amusement park on Rungra Island in Pyongyang, North Korea, opened in July 2012 by Kim Jong Un, with a dolphinarium, water park, and Zamperla rides.
Rungwe
Rungwe is an active stratovolcano in southwestern Tanzania near Lake Malawi, rising about 2,950 m and last erupting around 1250 CE, the southernmost volcano in the East African Rift System.
Runnymede
Runnymede is a Thames water-meadow in Surrey, England, where King John sealed Magna Carta on 15 June 1215; now a National Trust estate with the Magna Carta, Kennedy and Air Forces memorials, paired with Ankerwycke.
Rupert
Rupert (Rivière Rupert), a major river in western Quebec flowing from Lac Mistassini to Rupert Bay, James Bay; named for Prince Rupert, first HBC governor; partially diverted since 2009 for Hydro-Québec's Eastmain-1-A and Rupert hydroelectric project.
Rupert's Land
Rupert's Land, Terre de Rupert, was the Hudson Bay drainage basin territory chartered by Charles II to the Hudson's Bay Company in 1670 and sold to Canada in 1869-70 for $1.5 million, becoming the North-West Territories.
Rupes Altai
Rupes Altai (Altai Scarp) is a 427-km-long lunar escarpment, a segment of the Nectaris basin rim west of Mare Nectaris, 3.5-4.0 km high, IAU-named in 1961 after the terrestrial Altai Mountains.
Rupes Cauchy
Rupes Cauchy is a giant lunar normal-fault scarp, 300 m tall, crossing about 200 km of eastern Mare Tranquillitatis at 9.31N 37.08E; IAU-named 1964 from nearby crater Cauchy, paired with Rima Cauchy graben.
Rupes Kelvin
Rupes Kelvin is an IAU-approved lunar scarp (rupes), feature ID 5227, about 86 km long at 28.03 S, 33.17 W on the Moon, a remnant rim of the Humorum Basin named in 1964 from a nearby promontorium.
Rupes Liebig
Rupes Liebig is a 144.78 km lunar escarpment on the western shore of Mare Humorum at 25.14S, 45.92W, IAU-approved in 1964 and named from the nearby crater Liebig.
Rupes Mercator
Rupes Mercator, a named lunar scarp (rupes) at 31°S 22.3°W, about 93 km long, approved 1985, named from crater Mercator; a remnant wall of the Nubium Basin.
Rupes Recta
Rupes Recta, commonly called the Straight Wall, is a large linear normal fault in eastern Mare Nubium on the Moon, appearing as a dark line under low sunlight.
Rupes Tenuis
Rupes Tenuis is an IAU-named (1988) scarp on Mars at the southern edge of the north polar cap, about 650 km across, marking the erosional front of the Early Amazonian Rupes Tenuis basal unit of Planum Boreum.
Rupite (Рупите)
Rupite (Рупите) is a village and locality near Petrich, southwestern Bulgaria, at the extinct Kozhuh volcano, known for 74 °C mineral springs, Baba Vanga's grave at the 1994 St. Petka church, and nearby Heraclea Sintica.
Rural area
Rural area: territory outside defined urban areas, marked by low population density and small settlements. Defined residually by the U.S. Census Bureau, by 1 km² grid cells under the EU/OECD degree of urbanisation, and by nonmetro counties in USDA usage.
Rural localities of the Americas
Rural localities of the Americas are settled places outside each country's urban definition, which varies by country, from US census rules to Mexico's 2,500-inhabitant threshold.
Rural settlement
Rural settlement: countryside communities from farmsteads to nucleated villages, living off land-based primary activities; classified as clustered, semi-clustered, hamleted, or dispersed, and linked to cities through trade and services.
Rusadir
Rusaddir, also spelled Rusaddir in Latin sources, was a Phoenician-Punic and later Roman port town on the north Moroccan coast, beneath the modern Spanish city of Melilla, between Cape Tres Forcas and the Moulouya river.
Rusahinili
Rusahinili (Rusakhinili) is an ancient Urartian fortress city at modern Toprakkale, about 5 km east of Van in eastern Turkey, founded in the 7th century BC.
Rusalka Planitia
Rusalka Planitia is a broad lowland plain on Venus, about 3,600 km across and lying north of eastern Aphrodite Terra, named by the IAU in 1982 for a Russian folklore mermaid.