Portal:Geography

Guallatiri is a volcano in Chile with an elevation of 6,060 to 6,071 m (19,882 to 19,918 ft). It is located southwest of the Nevados de Quimsachata volcanic group; some sources classify Guallatiri as a member. Guallatiri is a stratovolcano with numerous fumaroles around the summit. The summit may be a lava dome or volcanic plug, while the lower flanks of the volcano are covered by lava flows and lava domes. The volcano's eruptions have produced mostly dacite along with andesite and rhyolite. Past glaciation has left moraines on Guallatiri.

A large eruption took place approximately 2,600 years ago. Guallatiri has been active in historical times with a number of eruptions, the latest in 1960. Fumarolic and seismic activity is ongoing and has resulted in the deposition of sulfur and other minerals on the volcano. The volcano is covered by an ice cap above 5,500 to 5,800 m (18,000 to 19,000 ft) that has shrunk and fragmented during the course of the 20th and 21st centuries. Guallatiri, along with several other volcanoes, is part of Lauca National Park and is monitored by the Chilean National Geology and Mining Service (SERNAGEOMIN). (Full article...)

India, officially the Republic of India, is a country in South Asia. It is the seventh-largest country by area; the most populous country since 2023; and, since its independence in 1947, the world's most populous democracy. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is near Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Myanmar, Thailand, and Indonesia.

Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago. Their long occupation, predominantly in isolation as hunter-gatherers, has made the region highly diverse. Settled life emerged on the subcontinent in the western margins of the Indus river basin 9,000 years ago, evolving gradually into the Indus Valley Civilisation of the third millennium BCE. By 1200 BCE, an archaic form of Sanskrit, an Indo-European language, had diffused into India from the northwest. Its hymns recorded the early dawnings of Hinduism in India. India's pre-existing Dravidian languages were supplanted in the northern regions. By 400 BCE, caste had emerged within Hinduism, and Buddhism and Jainism had arisen, proclaiming social orders unlinked to heredity. Early political consolidations gave rise to the loose-knit Maurya and Gupta Empires. This era was noted for creativity in art, architecture, and writing, but the status of women declined, and untouchability became an organised belief. In South India, the Middle kingdoms exported Dravidian language scripts and religious cultures to the kingdoms of Southeast Asia. (Full article...)

The Riegelmann Boardwalk (also known as the Coney Island Boardwalk) is a 2.7-mile-long (4.3 km) boardwalk on the southern shore of the Coney Island peninsula of Brooklyn in New York City, New York, United States. Opened in 1923, the boardwalk runs along the Atlantic Ocean between West 37th Street to the west, at the edge of the Sea Gate neighborhood, and Brighton 15th Street to the east, in Brighton Beach. It is operated by the New York City Department of Parks and Recreation (NYC Parks).

The Riegelmann Boardwalk is primarily made of wooden planks arranged in a chevron pattern. It ranges from 50 to 80 feet (15 to 24 m) wide and is raised slightly above sea level. The boardwalk connects several amusement areas and attractions on Coney Island, including the New York Aquarium, Luna Park, Deno's Wonder Wheel Amusement Park, and Maimonides Park. It has become an icon of Coney Island, with numerous appearances in the visual arts, music, and film. After its completion, the boardwalk was considered the most important public works project in Brooklyn since the Brooklyn Bridge, with a comparable impact to the Catskill Watershed and Central Park. (Full article...)

T8 was a sea-going torpedo boat operated by the Royal Yugoslav Navy between 1921 and 1941. Originally 97 F, a 250t-class torpedo boat of the Austro-Hungarian Navy built in 1915–1916, she was armed with two Škoda 66 mm (2.6 in) guns and four 450 mm (17.7 in) torpedo tubes and could carry 10–12 naval mines. She saw active service during World War I, performing convoy escort, patrol, and minesweeping tasks, as well as anti-submarine operations. In 1917, the suffixes of all Austro-Hungarian torpedo boats were removed, and thereafter she was referred to as 97.

Following Austria-Hungary's defeat in 1918, 97 was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which later became the Royal Yugoslav Navy, and renamed T8. At the time, she and the seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force. During the interwar period, T8 and the rest of the navy were involved in training exercises and cruises to friendly ports, but activity was limited by constrained naval budgets. The boat was captured by the Italians during the German-led Axis invasion of Yugoslavia in April 1941. After her main armament was modernised, she served with the Royal Italian Navy under her Yugoslav designation, conducting coastal and second-line escort duties in the Adriatic Sea. Following the Italian capitulation in September 1943, T8 was sunk by German aircraft while attempting to escape to Allied-held southern Italy. (Full article...)

Trafford is a metropolitan borough of Greater Manchester, England, with an estimated population of 241,025 in 2024. It covers 106 square kilometres (41 sq mi) and includes the towns of Altrincham, Stretford, Urmston, Partington and Sale. The borough was formed in 1974 as a merger of six former districts and part of a seventh. The River Mersey flows through the borough, separating North Trafford from South Trafford, and the historic counties of Lancashire and Cheshire. Trafford is the seventh-most populous district in Greater Manchester.

There is evidence of Neolithic, Bronze Age, and Roman activity in the area, two castles – one of them a Scheduled Ancient Monument – and over 200 listed buildings. In the late 19th century, the population rapidly expanded with the arrival of the railway. Trafford is the home of Manchester United F.C. and Lancashire County Cricket Club, as well as Altrincham F.C. and Trafford F.C. The Imperial War Museum North, opened in 2002, is located in the borough. (Full article...)

Petrified Forest National Park is a national park of the United States in Navajo and Apache counties in northeastern Arizona. Named for its large deposits of petrified wood, the park covers about 346 square miles (900 square kilometers), encompassing semi-desert shrub steppe as well as highly eroded and colorful badlands. The park's headquarters is about 26 miles (42 km) east of Holbrook along Interstate 40 (I-40), which parallels the BNSF Railway's Southern Transcon, the Puerco River, and historic U.S. Route 66, all crossing the park roughly east–west. The site, the northern part of which extends into the Painted Desert, was declared a national monument in 1906 and a national park in 1962. The park received 644,922 recreational visitors in 2018.

Averaging about 5,400 feet (1,600 m) in elevation, the park has a dry windy climate with temperatures that vary from summer highs of about 100 °F (38 °C) to winter lows well below freezing. More than 400 species of plants, dominated by grasses such as bunchgrass, blue grama, and sacaton, are found in the park. Fauna include larger animals such as pronghorns, coyotes, and bobcats; many smaller animals, such as deer mice, snakes, lizards, and seven kinds of amphibians; and more than 200 species of birds, some of which are permanent residents and many of which are migratory. About one third of the park is designated wilderness—50,260 acres (79 sq mi; 203 km²). (Full article...)

The Maya civilization (/ˈmaɪə/) was a Mesoamerican civilization that existed from antiquity to the early modern period. It is known by its ancient temples and glyphs (script). The Maya script is the most sophisticated and highly developed writing system in the pre-Columbian Americas. The civilization is also noted for its art, architecture, mathematics, calendar, and astronomical system.

The Maya civilization developed in the Maya Region, an area that today comprises southeastern Mexico, all of Guatemala and Belize, and the western portions of Honduras and El Salvador. It includes the northern lowlands of the Yucatán Peninsula and the Guatemalan Highlands of the Sierra Madre, the Mexican state of Chiapas, southern Guatemala, El Salvador, and the southern lowlands of the Pacific littoral plain. Today, their descendants, known collectively as the Maya, number well over 6 million individuals, speak more than twenty-eight surviving Mayan languages, and reside in nearly the same area as their ancestors. (Full article...)

Beirut was twice occupied during the Russo-Turkish War of 1768–1774 by squadrons of the Imperial Russian Navy's Mediterranean Fleet, first in June 1772 and second from October 1773 to early 1774, as part of its Levant campaign. Russia's main objective in this campaign was to assist local forces led by Egypt's autonomous ruler, Ali Bey al-Kabir, who was in open rebellion against the Ottoman Empire.

Russia, led by Catherine the Great, was pressing the Ottomans in Europe. Ali took advantage of the Empire's preoccupation with Russia to declare Egypt's independence; in 1771 he sent an army led by Muhammad Bey Abu al-Dhahab to occupy Ottoman territory in the Levant. Abu al-Dhahab unexpectedly returned to challenge Ali for control of Egypt. Ali requested Russian military assistance against both his rival and the Ottomans. When this aid, in the form of a small Russian squadron, arrived in the region, Ali had already fled Egypt and taken refuge in Acre, the power base of his ally, Daher al-Umar. After helping repel an Ottoman offensive on Sidon, the Russian squadron sailed for Beirut. They bombarded the town in June 1772 and occupied it from 23 to 28 June. (Full article...)

On 21 January 1968, an aircraft accident, sometimes known as the Thule affair or Thule accident (/ˈtuːli/; Danish: Thuleulykken), involving a United States Air Force (USAF) B-52 bomber occurred near Thule Air Base in the Danish territory of Greenland. The aircraft was carrying four B28FI thermonuclear bombs on a Cold War "Chrome Dome" alert mission over Baffin Bay when a cabin fire forced the crew to abandon the aircraft before they could carry out an emergency landing at Thule Air Base. Six crew members ejected safely, but one who did not have an ejection seat was killed while trying to bail out. The bomber crashed onto sea ice in North Star Bay, Greenland, causing the conventional explosives aboard to detonate and the nuclear payload to rupture and disperse, resulting in radioactive contamination of the area.

The United States and Denmark launched an intensive clean-up and recovery operation, but the secondary stage of one of the nuclear weapons could not be accounted for after the operation was completed. USAF Strategic Air Command "Chrome Dome" operations were discontinued immediately after the accident, which highlighted the safety and political risks of the missions. Safety procedures were reviewed, and more stable explosives were developed for use in nuclear weapons. (Full article...)

The War of the Fifth Coalition was a European conflict in 1809 that was part of the Napoleonic Wars and the Coalition Wars. The main conflict took place in Central Europe between the Austrian Empire of Francis I and Napoleon's French Empire. The French were supported by their client states—the Kingdom of Italy, the Confederation of the Rhine and the Duchy of Warsaw. Austria was supported by the Fifth Coalition which included the United Kingdom, Portugal, Spain, and the Kingdoms of Sardinia and Sicily, although the latter two took no part in the fighting. By the start of 1809 much of the French army was committed to the Peninsular War against Britain, Spain and Portugal. After France withdrew 108,000 soldiers from Germany, Austria attacked France to seek the recovery of territories lost in the 1803–1806 War of the Third Coalition. The Austrians hoped Prussia would support them, having recently been defeated by France, but Prussia chose to remain neutral.

Archduke Charles carried out major reforms to the Imperial Austrian Army, but the quality of it was diminished to some extent by the incompleteness of training and the Army's multinational nature. The French military relied on their talented emperor, veterans, whose numbers had dwindled over the course of recent wars, as well as the effective Napoleonic la maraude tactics. Napoleon, like the Austrians, had to cope with a multinational army, which included many foreign allies. On 10 April 1809, Austrian forces under Archduke Charles crossed the border of Bavaria, a French client state. The French response, under Louis-Alexandre Berthier, was disorganised but order was imposed with the arrival of Napoleon on 17 April. Napoleon led an advance to Landshut, hoping to cut off the Austrian line of retreat and sweep into their rear. Charles crossed the Danube at Regensburg, which allowed him to retreat eastwards, although he failed to reach the Austrian capital, Vienna, before the French. A French assault across the Danube was repulsed on 21–22 May at the Battle of Aspern-Essling but a repeat attack was successful in July. Napoleon won a major victory at the 5–6 July Battle of Wagram, which forced the Austrians to sign the Armistice of Znaim on 12 July. Austrian invasions of the Duchy of Warsaw and Saxony (where they fought alongside the Black Brunswickers) were repulsed and they were driven out of their territories in Italy. British forces landed in Walcheren, in the French client state of Holland, but were unable to seize their objective of capturing Antwerp and later withdrew. (Full article...)

The first expedition to reach the Geographic South Pole was led by the Norwegian explorer Roald Amundsen. He and four other crew members made it to the geographical South Pole on 14 December 1911, which was to be five weeks ahead of the British party led by Robert Falcon Scott as part of the Terra Nova Expedition. Amundsen and his team returned safely to their base, and about a year later heard that Scott and his four companions had perished on their return journey.

Amundsen's initial plans had focused on the Arctic and the conquest of the North Pole by means of an extended drift in an icebound ship. He obtained the use of Fridtjof Nansen's polar exploration ship Fram, and undertook extensive fundraising in a country that had gained its independence only some six years earlier. Preparations for this expedition were disrupted when, in 1909, the rival American explorers Frederick Cook and Robert Peary each claimed to have reached the North Pole - both claims are highly disputed. Amundsen then changed his plan and began to prepare for a conquest of the South Pole; uncertain of the extent to which the public and his backers would support him, he kept this revised objective secret. When he set out in June 1910, he led even his crew to believe they were embarking on an Arctic drift, and revealed their true Antarctic destination only when Fram was leaving their last port of call, Madeira, on 9 September 1910. (Full article...)

The Boring Lava Field (also known as the Boring Volcanic Field) is a Plio-Pleistocene volcanic field of cinder cones, small shield volcanoes, and lava flows in the northern Willamette Valley of the U.S. state of Oregon and adjacent southwest Washington. The volcanic field is named for the town of Boring, Oregon, located 12 miles (20 km) southeast of downtown Portland and on the edge of the densest cluster of volcanic vents. The zone became volcanically active about 2.7 million years ago, with long periods of eruptive activity interspersed with quiescence. Its last eruptions took place about 57,000 years ago at the Beacon Rock cinder cone volcano. The individual volcanic vents of the field are considered extinct, but the field itself is not.

The Boring Lava Field covers an area of about 1,500 square miles (3,900 km²) and has a total volume of 2.4 cubic miles (10 km³). This region sustains diverse flora and fauna within its habitat areas, which are subject to Portland's moderate climate. The highest point of the field is at Larch Mountain, which reaches an elevation of 4,055 feet (1,236 m). (Full article...)

The Jeannette expedition of 1879–1881, officially called the U.S. Arctic Expedition, was an attempt led by George W. De Long to reach the North Pole by pioneering a route from the Pacific Ocean through the Bering Strait. The premise was that a temperate current, the Kuro Siwo, flowed northwards into the strait, providing a gateway to the hypothesized Open Polar Sea and thus to the pole.

This theory proved illusory; the expedition's ship, USS Jeannette and its crew of thirty-three men, was trapped by ice and drifted for nearly two years before she was crushed and sunk north of the Siberian coast. De Long then led his men on a perilous journey by sled, dragging the Jeannette's whaleboat and two cutters, eventually switching to these small boats to sail for the Lena Delta in Siberia. During this journey, and in the subsequent weeks of wandering in Siberia before rescue, twenty of the ship's complement died, including De Long. (Full article...)

The Trout Creek Mountains are a remote, semi-arid Great Basin mountain range mostly in southeastern Oregon and partially in northern Nevada in the United States. The range's highest point is Orevada View Benchmark, 8,506 feet (2,593 m) above sea level, in Nevada. Disaster Peak, elevation 7,781 feet (2,372 m), is another prominent summit in the Nevada portion of the mountains.

The mountains are characteristic of the Great Basin's topography of mostly parallel mountain ranges alternating with flat valleys. Oriented generally north to south, the Trout Creek Mountains consist primarily of fault blocks of basalt, which came from an ancient volcano and other vents, on top of older metamorphic rocks. The southern end of the range, however, features many granitic outcrops. As a whole, the faulted terrain is dominated by rolling hills and ridges cut by escarpments and canyons. (Full article...)

On May 18, 1980, at 8:32 a.m., Mount St. Helens in Skamania County, Washington, United States experienced a catastrophic explosive eruption. The eruption, which had a volcanic explosivity index of 5, was the first to occur in the contiguous United States since the much smaller 1915 eruption of Lassen Peak in California. The main eruption was preceded by a series of volcanic explosions, pyroclastic flows, and phreatic blasts beginning in March 1980. It has often been considered the most disastrous volcanic event in U.S. history.

The eruption was preceded by a series of earthquakes and steam-venting episodes caused by an injection of magma at shallow depth below the volcano that created a large bulge and a fracture system on the mountain's north slope. An earthquake at 8:32:11 am PDT (UTC−7) on May 18, 1980, caused the entire weakened north face to slide away, a sector collapse which was the largest subaerial landslide in recorded history. This allowed the partly molten rock, rich in high-pressure gas and steam, to suddenly explode northward toward Spirit Lake in a hot mix of lava and pulverized older rock, overtaking the landslide. An eruption column rose 80,000 feet (24 km; 15 mi) into the atmosphere and deposited ash in eleven U.S. states and various Canadian provinces. At the same time, snow, ice, and several entire glaciers on the volcano melted, forming a series of large lahars (volcanic mudslides) that reached as far as the Columbia River, nearly 50 miles (80 km; 260,000 ft) to the southwest. Less severe outbursts continued into the next day, only to be followed by other large, but not as destructive, eruptions later that year. The thermal energy released during the eruption was equal to 26 megatons of TNT. (Full article...)