Quadripoint in the context of "Four Corners"

Namibia, officially the Republic of Namibia, is a country in Southern Africa. Its borders include the Atlantic Ocean to the west, Angola and Zambia to the north, Botswana to the east and South Africa to the south; in the northeast, approximating a quadripoint, Zimbabwe lies less than 200 metres (660 feet) away along the Zambezi River near Kazungula, Zambia. Namibia's capital and largest city is Windhoek.

Namibia is the driest country in sub-Saharan Africa, and has been inhabited since prehistoric times by the Khoi, San, Damara and Nama people. Around the 14th century, immigrating Bantu peoples arrived as part of the Bantu expansion. From 1600 the Owambo formed kingdoms, such as Ondonga and Oukwanyama.

The four corners is a quadripoint near 60°N 102°W / 60°N 102°W / 60; -102 (Four corners (Canada) approximately) where four Canadian provinces or territories meet. These are the provinces of Manitoba and Saskatchewan and the territories of the Northwest Territories and Nunavut. It came into being with the creation of Nunavut on April 1, 1999.

Kazungula is a small border town in Zambia, lying on the north bank of the Zambezi River about 70 kilometres (45 mi) west of Livingstone on the M10 Road.

At Kazungula, the territories of four countries (Zambia, Botswana, Zimbabwe, and Namibia) come close to meeting at a quadripoint. It has now been agreed that the international boundaries contain two tripoints joined by a short line roughly 150 metres (490 ft) long forming a boundary between Zambia and Botswana, now crossed by the Kazungula Bridge. The ever-shifting river channels and the lack of any agreements addressing the issue before 2000 led to some uncertainty in the past as to whether or not a quadripoint legally existed. Thus, Botswana and Zambia share a border of about 150 metres (490 ft) at the confluence of the Chobe River and the Zambezi River, between Impalila Island, the extreme tip of Namibia's Caprivi Strip and Zimbabwe.

Bir Tawil (Egyptian Arabic: بير طويل, romanized: Bīr Ṭawīl, lit. 'tall water well', [biːɾ tˤɑˈwiːl]) is a 2,060 km (795.4 sq mi) area of land along the border between Egypt and Sudan which is claimed by neither country. Together with the neighbouring Halaib Triangle, it is sometimes called the Bir Tawil Triangle, despite its quadrilateral shape; the two regions border at a quadripoint.

Its unclaimed status results from a discrepancy between the straight political boundary between Egypt and Sudan established in 1899 and the irregular administrative boundary established in 1902. Egypt asserts the political boundary, and Sudan asserts the administrative boundary, with the result that the Halaib Triangle is claimed by both and Bir Tawil by neither. As of 2014, Bir Tawil was the only place that was habitable but not claimed by any recognised government.

The Four Corners Monument marks the quadripoint in the Southwestern United States where the states of Arizona, Colorado, New Mexico, and Utah meet. It is the only point in the United States shared by four states, leading to the area being named the Four Corners region. The monument also marks the boundary between two semi-autonomous Native American governments, the Navajo Nation, which maintains the monument as a tourist attraction, and the Ute Mountain Ute Tribe Reservation.

The origins of the state boundaries marked by the monument occurred just prior to, and during, the American Civil War, when the United States Congress acted to form governments in the area to combat the spread of slavery to the region. When the early territories were formed, their boundaries were designated along meridian and parallel lines. Beginning in the 1860s, these lines were surveyed and marked. These early surveys included some errors, but even so, the markers placed became the legal boundaries, superseding the written descriptions of geographical meridians and parallels. This includes the Four Corners Monument, which has been legally established as the corner of the four states.

The Caprivi Strip, also known simply as Caprivi, is a geographic salient protruding from the northeastern corner of Namibia. It is bordered by Botswana to the south and Angola and Zambia to the north. Namibia, Botswana and Zambia meet at a single point at the eastern tip of the Strip, which also comes within 150 m (490 ft) of Zimbabwe, thus nearly forming a quadripoint. Instead, Botswana and Zambia share this 150-metre (490 ft) border that intersects a bridge at the crossing of Kazungula.

The territory was acquired in 1890 by German South West Africa in order to provide access to the Zambezi River and consequently a route to the east coast of the continent and German East Africa. The route was later found not to be navigable because of the location of the Victoria Falls, one of the world's largest waterfalls, about 65 kilometres (40 miles) east of the Caprivi Strip, and because of more waterfalls downstream such as Kariba Gorge and Cahora Bassa.

Maletto (Sicilian: Malettu) is a comune (municipality) in the Metropolitan City of Catania in the Italian region Sicily, located about 140 kilometres (87 mi) east of Palermo and about 40 kilometres (25 mi) northwest of Catania.

Maletto borders the following municipalities: Adrano, Belpasso, Biancavilla, Bronte, Castiglione di Sicilia, Nicolosi, Randazzo, Sant'Alfio, Zafferana Etnea. It is an enclave within Bronte and borders the other eight at one point at the top of Mount Etna.