How many movies have Antonio Castañeda and Roberto Muñoz collaborated on?

They have worked on 3 movies together! Their first movie together was The Castle of Mummies of Guanajuato (1973) while their highest rated movie together was The Mansion of The 7 Mummies (1977). They have not worked together since The Mansion of The 7 Mummies (1977). They are most known for their action films together.