Volcano is located in the Narino Province, South of Colombia. It is an andesitic strato-volcano, which structure was formed by the interchange of lava flows and pyroclastic deposits of different sizes. In the last 4500 years, six major eruptions have been identified (4500, 4000, 2900, 2300, 1100 years before present and in the XIX century), with eruptive columns of small size and producing small pyroclastic flows. In the past 500 years, the eruptions have been characterized by gas and ash emissions, small lava flows and explosive eruptions which have also produced pyroclastic flows. Since INGEOMINAS started the monitoring in 1989, it has been recorded several manifestations of its activity, starting from its re-activation characterized by frequent phreatic eruptions (at the end of 1988 and beginning of 1989), the gradual arise of a viscous magma and its emplacement as a dome in the bottom of the main crater (second semester of 1991), and subsequent explosive eruptions related with the dome destruction and volcanic process development (eruptions on July 16,1992; January 14, March 23, April 4, April 13 and June 7, 1993)), as well as, the record of seismic sequences of Volcano-Tectonic events, related with fracturing process, located in the neighborhood of the volcanic edifice (April and November, 1993 and March, 1995). Since 1997, this volcano is the focus of the implementation and development of what here is called the Galeras Multiparameter Station, a project which consists in technological adequacy and research, and is carried out by the Institute for Research and Geoscientific, Mining - Enviromental and Nuclear Information (INGEOMINAS - Colombia) and the Federal Institute for Geosciences and Natural Resources (BGR - Germany). The INGEOMINAS - BGR Project is proposed in order to investigate the Volcanic activity through the combination of various geophysical and geochemical disciplines like broadband seismology, electro-magnetic methods, gas chemistry, thermography, gravimetry and geodesy in a continuos telemetric experiment for long time observations.