Poas Volcano National Park COSTA RICA

Poas volcanic massif is composed of three craters: Main (active), Von Frantzius (by Alexander von Frantzius, German physician and explorer) and Botos (referring to the original living in the area). The main crater is 300 m deep and a diameter of about 1.32 km in diameter in north-south direction, which makes the crater type world1 largest geyser and one of the largest craters in the world.2 It retains active in today, with smaller emissions and an acidic lake. The last major eruptions were between 1952 and 1954. In 2014, began with some important activity, with phreatic eruptions that reached 250 meters high, so that sometimes, the park had to be closed due to high emissions of gases sporadic that they have occurred. The Botos crater is a green color lake with water due to the amount of sulfuric acid in water and has a diameter of 365 m. It is surrounded by cloud forest, making it one of the main attractions of the place, along with the observation of the main crater. Poas area is a region rich in biodiversity and agricultural production. The park has a wide variety of wildlife such as squirrels, various kinds of birds, peccaries and dozens of orchids and bromeliads. The park has a visitor center, basic services and well-marked trails. Etymology [edit] Poas volcano seen from space. During pre-Hispanic times, the Poas volcano was known as Chibuzú, from the cabécar language word meaning mountain Sibú, maximum deity of some pre-Columbian tribes of Costa Rica. Poas name derives from other Indian word of huetar origin, POASI or puasi, of uncertain significance. At some times, the volcano has been called variously as Poas Poas, Barbs and quills. In 1663, the name Poas to refer to some land (paddocks barbed) located west of the river Tines (now River Poas), between Alajuela and Greece was recorded for the first time. Indeed, in 1782, the present city of Greece was known as Poas, as well as the present town of San Pedro de Poas was known at the time as Púas.3 Another hypothesis suggests that the Poas name refers to a natural plant area a piñuela family of bromeliads, whose leaves resemble thorns (Latin spike). Another abundant plant in the region is hawthorn, a shrub with green spines that resemble púas. Head crater The main crater, the only showing volcanic activity, has a semicircular shape with a north-south 1,320 m and a depth of 300 m between the viewpoint (2,560 masl) and laguna.4 Southbound diameter, the crater has one intracratérica beach with lacustrine and pyroclastic deposits. The crater has box morphogenetic units: the eastern plateau, the lake, the lava dome and the beach. In the southern part, it has gully. Several semicircular contours inside this crater indicate the existence of ancient craters now deformed by volcanic and erosional processes. To the north lies the dome or lava dome, plus the lagoon with very acidic and hot water, which measures 300 m in diameter and 40 m deep. The dome is hemispherical shape and measures 30 meters high, its northern part presents fumaroles. Crater walls have steep slopes. <!- -

Poas Volcano National Park is a national park in Costa Rica that covers an area of ​​approximately 65 square kilometers (16,000 acres). Founded on January 25, 1971, it is the country's oldest national park. Its main attraction is the Poas volcano, a complex and very active stratovolcano that reaches 2708 meters, and one of the major peaks in the country. It is located in the province of Alajuela, 45 km Northwest of San Jose, the capital, in the conservation area of ​​the Cordillera Central, attached to the National System of Conservation Areas. The Poas Volcano is considered one of the most important eruptive centers in Costa Rica and one of the natural wonders of the country. In turn, the park that shelters is the most visited national level.






 natural resources [edit] The geographic area that protects the Poas Volcano National Park is an area of ​​great geological, geothermal, hydro, botanical and zoological wealth. The crater of the Poas Volcano hoya has numerous volcanic eruptions, the most notable hot lagoon of the main crater, the fumaroles and the pungent smell of "rotten egg" caused by the presence of hydrogen sulfide (H2S). It can be found in a variety of forest types of height as well as some specimens of mammals, birds and reptiles. In addition, the volcano born several rivers that feed the river basins of the rivers Grande Tarcoles and Sarapiqui. Also, in the hot springs (42.4 ° C, pH 2.2) and thermo-mineral hot lagoon main active crater (30-40 ° C, pH 0-3) have found bacteria as Thibacillus sp. and Bacillus sp., Navicula diatoms as sp. and Cymbella sp. and algae as Cyanidium caldarium, surviving under chemical and thermal conditions extremas <!- -

 Fauna [edit] La Paz waterfall. The presence of wildlife, once abundant, decreased considerably with hunting and deforestation, especially before the park was created in 1971. It is now possible to find mammals like rabbits, coyotes, weasels, kinkajou, raccoons, squirrels, wild pigs, cats, skunks, spins, and gophers lazy pig. It has been reported the presence of tapirs and mountain goat. It is not often observe in the upper part of the park, except for the squirrel, which are often sighted in the area of ​​the viewpoint. The park is rich in birdlife. They have identified 79 species of birds, including fire-throated hummingbird predominate, yigüirro, escarchero, kettle, wrens, mozotillo, quetzal, hawk, flycatcher, green toucan, woodpecker, goldfinch, thrush piquinegro, Zeledonia, dove. Among the reptiles, there are several species of iguanas, besides amphibians like frogs, salamanders and toads, especially around the Botos lagoon.

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