YAUYOS AND HUAROCHIRÍ ARE TWO PROVINCES IN THE DEPARTMENT OF LIMA THAT THE HOLY SEE SEPARATED IN 1957 FROM THE ARCHDIOCESE OF THE PERUVIAN CAPITAL TO ESTABLISH THEM AS A PRELATURA NULLIUS. AT OVER 4,000 METERS ABOVE SEA LEVEL, WITH PEAKS REACHING 6,000, IT WAS A VAST TERRITORY THAT HAD TO BE RESCUED FROM CENTURIES OF NEGLECT AND TURNED INTO A DIOCESE LIKE ANY OTHER. THE POPE ENTRUSTED THIS TASK TO OPUS DEI. A HANDFUL OF PRIESTS, LED BY THEIR BISHOP (IGNACIO ORBEGOZO), CARRIED OUT THEIR MISSION OF SERVICE THERE, RIDING BEASTS OF BURDEN THROUGH THE HARSHNESS OF A RUGGED LAND. SAMUEL VALERO WAS ONE OF THEM, AND HE RECOUNTS WHAT HE SAW AND LIVED IN HIS SURPRISING AND EPIC ADVENTURE IN THE ANDES.