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Cave Diving Regions Of The World
Cave diving is underwater diving in water-filled caves. The equipment used varies depending on the circumstances, and ranges from breath hold to surface supplied, but almost all cave diving is done using scuba equipment, often in specialised configurations with redundancies such as sidemount or backmounted twinset. Recreational cave diving is generally considered to be a type of technical diving due to the lack of a free surface during large parts of the dive, and often involves planned decompression stops. A distinction is made by recreational diver training agencies between cave diving and cavern diving, where cavern diving is deemed to be diving in those parts of a cave where the exit to open water can be seen by natural light. An arbitrary distance limit to the open water surface may also be specified. Despite the risks, water-filled caves attract scuba divers, cavers, and speleologists due to their often unexplored nature, and present divers with a technical diving cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cave Diver Running A Reel
A cave or cavern is a natural void in the ground, specifically a space large enough for a human to enter. Caves often form by the weathering of rock and often extend deep underground. The word ''cave'' can refer to smaller openings such as sea caves, rock shelters, and grottos, that extend a relatively short distance into the rock and they are called ''exogene'' caves. Caves which extend further underground than the opening is wide are called ''endogene'' caves. Speleology is the science of exploration and study of all aspects of caves and the cave environment. Visiting or exploring caves for recreation may be called ''caving'', ''potholing'', or ''spelunking''. Formation types The formation and development of caves is known as '' speleogenesis''; it can occur over the course of millions of years. Caves can range widely in size, and are formed by various geological processes. These may involve a combination of chemical processes, erosion by water, tectonic forces, microorgani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black Sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hinatuan, Surigao Del Sur
Hinatuan is a second class municipality in the province of Surigao del Sur, Philippines. According to the 2020 census, it has a population of 43,841 people. Hinatuan is approximately 44 kilometers (27 miles) north of Bislig, a component city in the same province. History Pre-Spanish Era The history of Hinatuan in the annals of historical heritage can be traced back from the time of the Spaniards in this part of Mindanao. The intermingling of tribes such as the Manobos, the Mansakas, Subanons and the Mandayas through assimilation and amalgamation leads to the final unification of a group of people who settled in the old town site known as Da-an Lungsod. Being the first and the earliest settlement, it was later identified as part of the province of Caraga under the administration of the politico - militar of Encomienda Bislig. The name Hinatuan, originally derived from the word "''Hatud''" and later called "''Hatudan''" was handed down from generation to generation throu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Balamban
Balamban, officially the Municipality of Balamban ( ceb, Lungsod sa Balamban; tgl, Bayan ng Balamban), is a 1st class municipality in the province of Cebu, Philippines. According to the 2020 census, it has a population of 95,136 people. Mount Manunggal in Barangay Magsaysay (formerly Sunog), is the site of the plane crash on 17 March 1957 in which President Ramon Magsaysay and 17 of his presidential staff and news correspondents were killed. History Balamban became a town "pueblo" in 1745. A Spanish document attests that the community was recognized as a town during Spanish colonial period. The first administrator was Ciriaco Gutierrez, a Spanish captain. Cityhood House Bill No. 1574 was filed last July 8, 2019 for the conversion of the municipality of Balamban into a component city in the province of Cebu. The bill is currently pending with the committee on local government since July 24, 2019. On July 5, 2022, House Bill No. 1018 was filed by Rep. Pablo John Garcia which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philippines
The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republika sang Filipinas * ibg, Republika nat Filipinas * ilo, Republika ti Filipinas * ivv, Republika nu Filipinas * pam, Republika ning Filipinas * krj, Republika kang Pilipinas * mdh, Republika nu Pilipinas * mrw, Republika a Pilipinas * pag, Republika na Filipinas * xsb, Republika nin Pilipinas * sgd, Republika nan Pilipinas * tgl, Republika ng Pilipinas * tsg, Republika sin Pilipinas * war, Republika han Pilipinas * yka, Republika si Pilipinas In the recognized optional languages of the Philippines: * es, República de las Filipinas * ar, جمهورية الفلبين, Jumhūriyyat al-Filibbīn is an archipelagic state, archipelagic country in Southeast Asia. It is situated in the western Pacific Ocean and consists of aro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mactan Island
Mactan is a densely populated island located a few kilometers (~1 mile) east of Cebu Island in the Philippines. The island is part of Cebu province and it is divided into the city of Lapu-Lapu and the municipality of Cordova. The island is separated from Cebu by the Mactan Channel which is presently crossed by three bridges: the Cebu–Cordova Link Expressway (CCLEX), the Mactan–Mandaue Bridge, and the Marcelo Fernan Bridge. The island covers some and has a population of 527,071 as of 2020, making it the nation's most densely populated island. Along with Olango Island Group, the isles are administered by a city and a municipality covering . Mactan–Cebu International Airport is located on the island. Etymology The modern name Mactan descended from an earlier form, ''Manctan''. However, evidence of this earlier form is scant as, even as early as the 17th century, the island was already named Mactan. This form is attested in the original copy of the Philippine Declaration ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cango Caves
The Cango Caves are located in Precambrian limestones at the foothills of the Swartberg range near the town of Oudtshoorn, in the Western Cape Province of South Africa. The principal cave is one of the country's finest, best known, and most popular tourist caves and attracts many visitors from overseas. Although the extensive system of tunnels and chambers go on for over , only about a quarter of this is open to visitors, who may proceed into the cave only in groups supervised by a guide. History Cave paintings and artifacts indicate that the caves were in use throughout prehistory over a long period during the Middle and Later Stone Ages .Goodwin, A.J.H. 1930. The chronology of the Mossel Bay Industry. ''South African Journal of Science''. 27:562-72 The caves were rediscovered in modern times in 1780 by a local farmer named Jacobus Van Zyl.Henry Hall, 1859''Manual of South African Geography: Forming a Companion to the Map of South Africa to 16° South Latitude.''Cape Town: S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flooded Mine
A flooded mine is one of the direct results of a mine's closure procedure. When a mine stops operating, its maintenance systems also stop, in which the dewatering systems are included. Without these systems the mine will get flooded by water that naturally occurs in rock formations in the ground. Overview Mining operations can occur over a long period of time, from several years to several decades, and in order to keep the mining operations running, water has to be removed from the mine as it accumulates. After the mine is closed, when its operational life ends, the maintenance systems stop, including the dewatering systems. Without dewatering, the mines tend to flood with surface and groundwaters in the lower levels and mined spaces, if there is not a drainage adit present. The flooding process of an open-pit or underground mine can take from a several months period to more than a decade, depending on factors such as volume of open space in the mine, availability of infiltrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Komati Springs , a type of ultramafic mantle-derived volcanic rock
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Komati may refer to: * Komati caste, is an Indian trading community primarily found in central and south India *Komati Power Station, a coal-fired power plant in South Africa Geography * Komati River, a River in South Africa, Eswatini and Mozambique *Komatiite Komatiite () is a type of ultramafic mantle-derived volcanic rock defined as having crystallised from a lava of at least 18 wt% MgO. Komatiites have low silicon, potassium and aluminium, and high to extremely high magnesium content. Komatiite wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wondergat
Lichtenburg () is a town situated in North West Province, South Africa. It is the administrative centre of Ditsobotla Local Municipality. The town was established in 1873 and was named by Transvaal President Thomas François Burgers as ''Lichtenburg'' (Town of Light). On the 13 March 1926, Jacobus Voorendyk, discovered a diamond on his family farm and within 12 months there were 108,000 fortune seekers on the scene. The resulting diamond rush lasted ten years. The main economic activity is the production of maize (corn) and meat. Lichtenburg lies in the heart of the maize triangle, which is the main maize growing area in South Africa. Another major economic activity is the production of cement. Within an radius of Lichtenburg there are three major cement producers, which creates opportunities for long-distance transport and related businesses. General information Lichtenburg is situated approximately west of Johannesburg on the main route to Mmabatho. It lies above sea level. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boesmansgat
Boesmansgat, also known in English as "Bushman's Hole", is a deep submerged freshwater cave (or sinkhole) in the Northern Cape province of South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring count ..., which has been dived to a depth of . Boesmansgat was believed to have first been explored by amateur diver Mike Rathbourne, in 1977. The greatest depth attained was by Nuno Gomes in 1996, diving to a depth of . Its altitude of over makes this a particularly challenging dive, requiring a decompression schedule equivalent for a dive to at sea level. Gomes' dive was a close call, as he got stuck in the mud on the bottom of Bushman's Hole for two minutes before escaping. On 24 November 2004, Verna van Schaik set the Guinness Woman's World Record for the deepest dive by diving down ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
YouTube
YouTube is a global online video sharing and social media platform headquartered in San Bruno, California. It was launched on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim. It is owned by Google, and is the second most visited website, after Google Search. YouTube has more than 2.5 billion monthly users who collectively watch more than one billion hours of videos each day. , videos were being uploaded at a rate of more than 500 hours of content per minute. In October 2006, YouTube was bought by Google for $1.65 billion. Google's ownership of YouTube expanded the site's business model, expanding from generating revenue from advertisements alone, to offering paid content such as movies and exclusive content produced by YouTube. It also offers YouTube Premium, a paid subscription option for watching content without ads. YouTube also approved creators to participate in Google's AdSense program, which seeks to generate more revenue for both parties. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
