Scans of the north wall of King Tutankhamun's burial chamber have revealed features beneath the intricately decorated plaster (highlighted) a researcher believes may be a hidden door, possibly to the burial chamber of Nefertiti.
https://flic.kr/p/UuP37n | Alabaster vase found in the tomb of King Tutankhamun Egypt New Kingdom 18th Dynasty 1332-1323 BCE | These meticulously created reproductions were photographed at The Discovery of King Tut" exhibition in New York City.
Theban tomb tracings made by Norman and Nina de Garis Davies
Bakenrenef, a vizier under Psamtik I, had a large tomb cut into the cliff at Saqqara. Because of the poor quality of the stone in this area, much of the tomb was lined with blocks of better stone into which the decoration was carved