He organized the rewrapping of many mummies and devised a secret hiding place for them in a narrow valley behind the Temple of Hatshepsut.
The mummies were hidden near the Temple of Hatshepsut. 
mnli hypothesis: The mummies were hidden near the Temple of Hatshepsut.  premise: He organized the rewrapping of many mummies and devised a secret hiding place for them in a narrow valley behind the Temple of Hatshepsut.