The Fondo Acción in Colombia finances the installation of 21 new CORS in the south-east of the country to densify the existing network. A consortium led by Trimble in which TeroMovigo participates is executing this project while Instituto Geográfico Agustín Codazzi (IGAC) and Servicio Geológico Colombiano (SGC) are monitoring our progress. TeroMovigo is responsible for the selection of the locations for the new CORS. TeroMovigo members examine the geological features of each location, investigate the risk for earthquakes and flooding, inspect the security of the site and perform GNSS observations to evaluate the quality of the GNSS signal. The latter is done with the use of the Anubis software.