The Cerro Bravo-Cerro Machín Volcanic Complex (CVCMVC) has new magmatic activity.
A change in volcanic activity started on 2007 at CBCMVC, Colombia.
Spatial and temporal variations of geophysical and geochemical parameters were studied.
Nevado del Ruiz volcano is under reawakening since 2010.
Cerro Machin, Santa Rosa, Cerro Bravo, Santa Isabel volcanoes showed increase activity.