One of the theoretical themes in this book that also highlights major new discoveries and facts about the Great Pyramid, is the RVT ('Recovery Vault Theory').
The authors put forward the theory that the pyramids of Giza in Egypt were perhaps used as 'recovery vaults' in the event of a major global catastrophe – concerning perhaps a shift of the earth's axis – which is why we find that the possible date of the catastrophe which was seen as a recurring pattern, was also encoded in the Great Pyramid and the layout of the Giza monuments, which together create a “precessional cycle clock” – a 13,000-year timeline to pinpoint the dates these recurring catastrophes are likely to happen within the precessional cycle of roughly 26,000 years.
To give support to this theory that the Giza pyramids were possibly used as recovery vaults, the authors also present the analogy of the 'Svalbard Global Seed Vault' which was built as recently as 2008 to preserve hundreds of species of seed and other valuable genetic data in the event of a global catastrophe.
Using the largest great Giza pyramids as recovery vaults would mean that Egypt was able to reconstitute itself like the Phoenix rising from the ashes of its former self, after a calamitous phase in which other civilizations in the Near East and beyond, such as the Akkadian Empire, had collapsed and vanished.
Below is a quote from 992 AD presenting a reasonable description of the pyramid as a 'Recovery Vault' along with WHY the pyramids were built.
"What essentially Scott and I are saying, is that rather than the largest pyramids at Giza being built to preserve the king, that instead they were built as “Arks” to preserve the kingdom in the event of a global catastrophe; in other words, they acted as a kind of "womb"
for the rebirth of the kingdom, and this means that not only were all kinds of knowledge encoded in these pyramids – along with the astronomical and geophysical knowledge we find encoded at Giza associated with whatever natural catastrophe threatened the kingdom – but they were also 'recovery vaults' to preserve everything about the culture that built them – ensuring the rebirth or resurrection of that culture."