Penascosa panel no. 6, superimposition of carved figures attributed to the oldest phase of the Côa Valley Rock art (30,000-25,000 years old)

The Côa Valley rock art is essentially carved. Pecking is the technique more common during the older phases and consists in the hammering of the rock surface with a stone tool prepared for that purpose, which produces a deep and broad line. Abrasion is also common. It consists in the production of a broad line by a repeated back and forth movement with a prepared stone tool prepared.