Which is the longest, deepest river valley in the world?

The Yarlung Tsangpo Grand Canyon or Yarlung Zangbo Grand Canyon or simply the Tsangpo Canyon, Brahmaputra Canyon or Tsangpo Gorge, along the Yarlung Tsangpo River in Tibet, China, is regarded as the deepest canyon in the world, and at 504. read more

The Congo River (read Zaire River), in Africa, is the world’s deepest river. The river has depths of about 250 metres. Its length is 4700 km. This river is very similar to Amazon River in the sense that it’s the second largest river in terms of water volume and that the river flows through the second largest rain forest in the world. read more

The Congo River (also spelled Kongo River and known as the Zaire River; French: (le) fleuve Congo/Zaïre; Portuguese: rio Congo/Zaire; Kongo: Nzâdi Kôngo) is the second longest river in Africa after the Nile and the second largest river in the world by discharge volume of water (after the Amazon), and the world's deepest river with measured depths in excess of 220 m (720 ft). read more

Hells Canyon: Deepest Canyon in the United States. Hells Canyon is the deepest river-cut canyon in the United States. The highest point on the edge of the canyon is 7993 feet (2436 meters) above the canyon floor below. It is ten miles wide and was cut by the waters of the Snake River. Hells Canyon is a remote area. read more

The world’s longest river is the Nile. At 6650 kilometres long, it’s no doubt the longest river in the world. All through the earliest civilisation of man, the Nile River has been entirely the source of water for civilization of man since the ancient times. read more