The area investigated comprises a 5 miles broad E-W belt mainly through the group of rocks called ”Complejo Antiguo” by professor Parga-Pondal (1956). The section runs roughly from the village of Lage on the west coast eastwards towards Carballo. The object was to detect the various relationships between the rocks of this group; more especially it is an attempt to elucidate the metamorphic history of this so-called Ancient complex in terms of a scheme of syn-, late- and post-kinematic metamorphic events.