KV9 is the well-preserved tomb of Ramesses V and, later, Ramesses VI, in the Valley of the Kings. Ramesses V constructed KV9 and it is believed that he was originally interred there, but it was later reused by his uncle, Ramesses VI, as his own tomb. Fragments of the inner anthropoid sarcophagus were found in the tomb and are now in the British Museum in London. The mummies of both pharaohs were found in the KV35 mummy cache in 1898.
The tomb is very beautifully decorated with many scenes from the Book of Gates, the Book of Caverns, the Book of the Heavenly Cow, the Book of the Dead, the Amduat, the Book of the Day, the Book of the Night, and the Book of the Earth. There are also scenes of the deceased with deities, astronomical scenes, and scenes of the resurrection of Osiris, deities, and enigmatic compositions. Graffiti in Greek, Latin, and Coptic are written over the scenes, indicating that the tomb has been open since antiquity.
The jambs of gate B through to gate F were originally inscribed for Rameses V. These were later re-carved by Rameses VI. The remaining chambers were finally inscribed for Rameses VI. During construction, workmen accidentally broke into the rear chamber of KV 12, the tomb of multiple unknown royals.
The tomb was constructed by Ramesses V from the entrance through to chamber E. The rest of the tomb was constructed by Ramesses VI. It is possible that the mummies of the two pharaohs shared the tomb, however it is not known for certain whether this is the case.
Theban Mapping Project – KV9: http://www.thebanmappingproject.com/sites/browse_tomb_823.html including full description and photographs.
Tomb of Ramesses V and VI (KV9): http://egyptsites.wordpress.com/2009/02/06/tomb-of-rameses-v-and-vi-kv9/
Reeves, N. & Wilkinson, R.H. 1996. The Complete Valley of the Kings. Thames and Hudson, London.