Instruct: Given a question, retrieve passages that answer the question.
Query: What is the deepest river in the world?
The great Congo River (Kongo: Nzâdi Kôngo; French: Fleuve Congo; Portuguese: rio Congo), formerly known as the Zaire River under the Mobutu regime, is the second longest river in Africa, shorter only than the Nile, as well as the second largest river in the world by discharge volume, following only the Amazon. It is also the world's deepest recorded river, with measured depths in excess of 220m (720ft).[2] The Congo-Lualaba-Chambeshi River system has an overall length of 4,700km (2,920mi), which makes it the world's ninth-longest river. The Chambeshi is a tributary of the Lualaba River, and Lualaba is the name of the Congo River upstream of Boyoma Falls, extending for 1,800km (1,120mi).
The lake is deep at its deepest point, which makes it the deepest lake in the United States, the second-deepest in North America and the ninth-deepest in the world. Crater Lake is often referred to as the seventh-deepest lake in the world, but this former listing excludes the approximately depth of subglacial Lake Vostok in Antarctica, which resides under nearly of ice, and the recent report of a maximum depth for Lake O'Higgins/San Martin, located on the border of Chile and Argentina. However, when comparing its average depth of to the average depth of other deep lakes, Crater Lake becomes the deepest in the Western Hemisphere and the third-deepest in the world. The impressive average depth of this volcanic lake is due to the nearly symmetrical caldera formed 7,700 years ago during the violent climactic eruptions and subsequent collapse of Mount Mazama and the relatively moist climate that is typical of the crest of the Cascade Range.
The lake is across, with a caldera rim ranging in elevation from and an average lake depth of . The lake's maximum depth has been measured at , which fluctuates slightly as the weather changes. On the basis of maximum depth, Crater Lake is the deepest lake in the United States, the second-deepest in North America (after Great Slave Lake in Canada), and the ninth-deepest lake in the world. Crater Lake is often cited as the seventh-deepest lake in the world, but this ranking excludes Lake Vostok in Antarctica, which is beneath about of ice, and the recent depth soundings of O'Higgins/San Martín Lake, which is along the border of Chile and Argentina.
The eastern boundaries of the Tonga and Kermadec Plates constitute the subduction zone of the Pacific Plate, characterized by a trench about 2,000 km in length. The trench is continuous, but has different names for different sections: Hikurangi Trench, the Kermadec Trench and the Tonga Trench. The Tonga Trench is the second deepest trench in the world at about 10,800 m, with the deepest point, Horizon Deep, being the deepest point in the Southern Hemisphere and the second deepest point in the world, after the Challenger Deep in the Mariana Trench. The eastern boundary of the Kermadec Plate is also the site of the Kermadec Trench, which is the fifth deepest trench in the world at about 10,000 m. The eastern boundary of the Tonga Plate is one of the fastest subduction zones with a rate of up to 24 cm/yr.
The main hydrographic feature of Mustang is the Gandaki River. The river runs southward towards Nepal Terai, bisecting Mustang. Routes paralleling the river once served as a major trade route between Tibet and India, especially for salt. Part of the river valley in the southern Mustang District forms the Kali Gandaki Gorge, by some measures the deepest gorge in the world.
The river and its tributaries flow through the Congo Rainforest, the second largest rain forest area in the world, second only to the Amazon Rainforest in South America. The river also has the second-largest flow in the world, behind the Amazon; the third-largest drainage basin of any river, behind the Amazon and Plate rivers; and is one of the deepest rivers in the world, at depths greater than 220m (720ft).[2][8] Because its drainage basin includes areas both north and south of the equator, its flow is stable, as there is always at least one part of the river experiencing a rainy season.[9]
The Tekezé or Täkkäze River (, originally meaning "river"), also spelled Takkaze, is a major river of Ethiopia. For part of its course it forms a section the westernmost border of Ethiopia and Eritrea. The river is also known as the Setit in Eritrea, western Ethiopia, and eastern Sudan. According to materials published by the Ethiopian Central Statistical Agency, the Tekezé River is long. The canyon which it has created is the deepest in Africa and one of the deepest in the world, at some points having a depth of over 2000 meters (6,562 feet).
The Sudbury Neutrino Observatory was the world's deepest underground experiment since the Kolar Gold Fields experiments ended with the closing of that mine in 1992. With the deepest underground laboratory in North America at 2100 metre water equivalent depth, and the deepest in the world at 4800 m.w.e., many other groups were interested in conducting experiments in the 6000 m.w.e. location.
The Dreketi River is located in the island of Vanua Levu in Fiji. It is 65 kilometers in length and the deepest river in Fiji. It is navigable for small crafts for 35 kilometers from its mouth and provides access to large tracts of fertile land through which it passes. This River is the deepest as no one has ever reached the bottom.
When leaving the Tibetan Plateau, the River forms the world's largest and deepest canyon, Yarlung Tsangpo Grand Canyon.
The Democratic Republic of the Congo is named after the Congo River, which flows through the entire country. The Congo River is the world's deepest river and the world's second largest river by discharge. The "Comité d'études du haut Congo" ("Committee for the Study of the Upper Congo"), established by King Leopold II of Belgium in 1876, and the International Association of the Congo, established by him in 1879, were also named after the river.
Aesthetic Realism is a philosophy founded in 1941 by poet and critic Eli Siegel (1902–1978). It is based on three core principles. First, the deepest desire of every person is to like the world on an honest or accurate basis. Second, the greatest danger for a person is to have contempt for the world and what is in it—contempt defined as the false importance or glory from the lessening of things not oneself. Third, the study of what makes for beauty in art is a guide for a good life: "All beauty is a making one of opposites, and the making one of opposites is what we are going after in ourselves."
This list of deepest mines includes operational and non-operational mines that are at least , which is the depth of Veryovkina Cave, the deepest known natural cave in the world. The depth measurements in this list represent the difference in elevation from the entrance of the mine to the deepest excavated point.
Lake Chelan is long and .75 to 2.1 miles wide, and is the third-deepest freshwater lake in the United States and the ninth-deepest in the world with a maximum depth of . Fed by streams from the Cascade Range, the lake flows into the Columbia River from the Chelan River.
There are hundreds of "holes" on Velebit. It has the largest and deepest caves in Croatia. The three-part "Lukina jama" cave is 1392 m deep, making it one of the deepest caves in the world, and the deepest in southeast Europe, while the "Slovačka jama" is 1320 m. What makes it unique is that it is completely vertical, steepest in the world. At the bottom of the pothole is a water course or siphon with branches that are still unexplored. A kind of leech was discovered in the pothole, which has been ascertained to represent a new species, genus and family; it has been named "Erpobdella mestrovi".
The Yarlung Tsangpo Grand Canyon (or Tsangpo Canyon), along the Yarlung Tsangpo River in Tibet, is regarded by some as the deepest canyon in the world at 5,500 m (18,000 ft). It is slightly longer than the Grand Canyon in the United States. Others consider the Kali Gandaki Gorge in midwest Nepal to be the deepest canyon, with a 6400 m (21,000 ft) difference between the level of the river and the peaks surrounding it.
The Yellala Falls ("Rapides de Yelala" or "Chutes Yelala"; also spelled as "Ielala") are a series of waterfalls and rapids on the Congo River just upstream from Matadi in the Democratic Republic of the Congo.
The falls are the lowest of a long series of rapids that render the river unnavigable, forcing colonial explorers to travel by foot as far as the Stanley Pool upstream.
The Congo is the third largest river in the world by volume of water discharged, and the deepest in the world. The section of river that ends with the Yellala falls has over 300 species of fish, many found nowhere else.
The source of the Pearse River near Motueka is the deepest known cold-water cave in the world.
Lynn Canal runs about from the inlets of the Chilkat River south to Chatham Strait and Stephens Passage. At over in depth, Lynn Canal is the deepest fjord in North America (outside Greenland) and one of the deepest and longest in the world as well.
Quesnel Lake is a glacial lake or fjord in British Columbia, Canada, and is the major tertiary of the Fraser River. With a maximum depth of 610 meters (although the true maximum depth is unknown), it is claimed to be the deepest fjord lake in the world, the fifth-deepest lake in BC, and the deepest lake in the Cariboo region.
At the heart of the Vikos–Aoös National Park, the Vikos Gorge or Vikos Canyon is the most impressive and famous natural monument of Zagori. The entire Vikos Gorge channel, a dry seasonal river during most time of the year, is about 38 km long. The deepest part of the gorge is about 12 km long. In the middle of its main part it is crossed by Megas Lakkos, an equally deep and wild branch, far from road access or villages. At the end or the mouth of Vikos Gorge, the Voidomatis river has its sources and then continues to flow through its own smaller gorge. The Vikos Gorge at 990m deep near Monodendri and 1350 m near its end. It is one of the deepest in the world, indeed the deepest in proportion to its width. The Vikos Gorge is also a site of major scientific interest, because it is in almost virgin condition, is a haven for endangered species and contains many and varied ecosystems.
Tibet has some of the world's tallest mountains, with several of them making the top ten list. Mount Everest, located on the border with Nepal, is, at , the highest mountain on earth. Several major rivers have their source in the Tibetan Plateau (mostly in present-day Qinghai Province). These include the Yangtze, Yellow River, Indus River, Mekong, Ganges, Salween and the Yarlung Tsangpo River (Brahmaputra River). The Yarlung Tsangpo Grand Canyon, along the Yarlung Tsangpo River, is among the deepest and longest canyons in the world.
Sarangde River flows from East-West and gets mixed into Modi River and the Chinne River flowing in the East-North direction passing through Alapeshwor Cave merges into Modi Khola flowing from West to South. At Modi Beni (informally:Modi Muni), the Modi River merges to the Kali Gandaki River, the only river in the World where Saligram Stone (a holy black stone) are found and also has deepest gorge in the world. Sarangde Khola has pools like Bulbule, Sarangde, Pahare, Lamhe, Talpale and others.
The extreme difference in elevation between the river valleys and the hilly plateaus of Chongqing pose a unique challenge in designing alignments for conventional rail transit lines. The network currently has the world's highest metro-only bridge, the Caijia Rail Transit Bridge for Line 6, spanning the Jialing River valley, with the bridge deck being approximately 100 m above the water. Hongtudi station is the deepest subway station in China and the second-deepest station in the world, after the Kiev Metro's Arsenalna, with Line 10's platforms being more than 94 m below the surface. Liyuchi station, also on Line 10, is the second-deepest station in China, being 76 m below the surface.
Lamprechtsofen (also called Lamprechtshöhle or, together with a connected cave, Lamprechtsofen-Vogelschacht) is a limestone karst river cave in Austria. With a depth of , it is one of the deepest caves in the world. Before the discovery of the Krubera Cave in Georgia, it was the deepest-known cave in the world. Lamprechtsofen is located northwest of Weißbach bei Lofer (Salzburg), Austria, in the Leogang Mountains.