The main section of Huaca Cao Viejo is a 27m truncated pyramid with some of the best friezes in the area. They show magnificently multicolored reliefs – much more color than you see at the huacas closer to Chiclayo – with stylized life-sized warriors, prisoners, priests and human sacrifices.
There are also many burial sites from the Lambayeque culture, which followed the Moche. The people who live near this huaca insist that it has positive energy and ceremonies are occasionally performed here when someone needs to soak up a bit of the good vibes.