The Hall of Records (HoR) is a term used to describe an alleged repository of ancient wisdom, frequently claimed to be situated under the Sphinx at Giza. Today, the HoR is usually associated with the prognostications of Edgar Cayce who, in one of his trances, told us that there were three such repositories, near Bimini, the Yucatan and Giza.
Popular writers Robert Bauval and Graham Hancock were convinced that the HoR had been situated under the rear paws of the Sphinx in Keepers of Genesis , published as Message of the Sphinx in the USA. Ian Lawton & Chris Ogilvie-Herald have noted in Giza the Truth  how both Bauval and Hancock have modified their view of the HoR in a later video [p.400]. Cayce thought that the HoR would be found under the left paw of the Sphinx.
Lawton & Ogilvie-Herald also review the comments of other writers, both modern and ancient regarding the HoR. Their preliminary conclusion was “that it would appear that the weight of evidence supports the idea that secret records of mankind’s ancient past and knowledge do indeed exist in various locations in the world. However, the evidence linking them to Giza is far less substantial.” [p.242]
In 2000, Ralph Ellis announced his intention to lead an expedition to Mount Kailash in Nepal to find the Hall of Records!(a)
(a) Atlantis Rising magazine #23 p15 http://www.pdfarchive.info/index.php?pages/At *