What to expect
At El Brujo, monument and museum belong to one story. Huaca Cao Viejo provides the setting; the Lady of Cao gives it a human focus. Treat them as one visit, allowing time for Museo Cao's explanation. An exterior photograph leaves a lot out.
How it fits into a journey
Allow a separate part of the day with ample transport time from Trujillo and agree the return. Include the town in the arrangement if you want to visit it.