Vicinity of Piton de la Fournaise volcano. The massive volcano Piton de la Fournaise, which rises to 2,631 m occupies the southeastern third of the island of Reunion. It is an active volcano on the island. The Piton de la Fournaise began operations 500,000 years ago. Today the volcano is located within a large caldera collapse (9 x 13 km) deep, 100 meters to 300, the site of Fouque, which is itself the intersection is, other shaped depression U, Grand Brûlé (8 x 13 km), descends to the sea The lunar landscape of this site you can see that the site is surrounded on the west side Fouque other boiler, the oldest, the Plaine des Sables. This designation comes from the caldera islands of the Canaries, to name a cauldron. In volcanology, a comprehensive set of more or less circular pressure due to the collapse of the central part of a volcano. Actually, there are two major types of boilers: The first is due to the emission of a large amount of silica-rich magma (pumice), as occurred in the Crater Lake 6600 years ago, in Santorini around 1600 BC. JC on Krakatoa in 1883 and more recently in Pinatubo. The depression thus formed is about ten kilometers in diameter on average. The second is the result, as the Piton de la Fournaise, Kilauea and Mauna Loa in Hawaii, to the Erta Ale in Ethiopia, or Kartala Comoros, the "hollowing out" of a small magma reservoir at the top. In most cases the magma migrates side during eruption of a fissure. This vacuum causes the surface of an underground pit (pit crater) from tens to hundreds of meters in diameter. The coalescence time of several of these wells is a main boiler kilometer in diameter. In the center of the room is a volcanic ridge with a height of 400 m from the floor of the caldera. The top of the cone is flat and has two craters at the summit: The West Bory (350-200 m), already present during the colonization of the island, and the Dolomieu (1000-700 m), which appeared in 1766. The name refers to Bory Bory de Saint Vincent, who was the first in 1802 to scientifically describe the Piton de la Fournaise and make the first map. Oven Buds eruptions since 1800 occurred within the two summit craters of the central cone is located within the grounds of Fouque. However, in 1977 a fissure eruption occurred outside the premises of Fouque, and a people, Piton Santa Rosa, was partly destroyed by a lava flow. A Volcano Observatory was created two years later, twenty kilometers from the volcano on the Plaine des Cafres. In 1986, a rash and a new fissure was held outside the precincts of Fouque and destroyed several houses in the village of Tremblay. This volcano, despite its many eruptions, not dangerous as it emits lava flow. After a period of inactivity of more than five years (between 1992 and 1998), the Piton de la Fournaise is again one of the most active volcanoes in the world, Kilauea, Etna and Stromboli. The Piton de la Fournaise, an active volcano, is a healthy rivalry for Internet meetings, offering many photo sites (especially in the eruption of 1998) and the discovery of this beautiful island with its volcano. The Volcano Observatory, managed by the Institute of Physics Globe de Paris, monitors, since 1980, the Piton de la Fournaise provides information about its history, the team that runs it, the map of the outpouring of lava from 1972-1998, the location of seismic monitoring networks and geophysics, as well as information on the March 1998 eruption that lasted six months. Today continues in full swing.