Nigel Appleby (a.k.a. Major Niall Arden) is the ‘author’ of Hall of the Gods, which purported to identify the location, in Egypt, of the Hall of Records that is supposed to contain the accumulated knowledge of an advanced worldwide civilisation that preceded the ancient Egyptians.
The author wrote of ‘Atlantis’ being “really just a symbolic name for the previous worldwide civilisation that existed prior to the last reversal of the Sun and Earth’s magnetic fields and the subsequent cataclysm that followed.” He then added that most of this civilisation still exists, virtually intact, beneath the Antarctic ice (p.363). He also claimed to have identified Nibiru in Sumerian texts independently of Zechariah Sitchin and to have deduced that it is “about the size of Earth and nearer than anticipated.”
He also announced the establishment of ‘Operation Hermes’, which had the objective of locating the Hall of Records near Giza(c) as well as other expeditions to Central & South America, China and Antarctica (p.378). Operation Hermes was abandoned when the Egyptian authorities refused permission for the expedition.
Shortly after the publication of the book in 1998, the publishers had to withdraw it from sale following claims of plagiarism by a number of other authors(a). Lynn Picknett & Clive Prince reveal some of the details of this episode in their Stargate Conspiracy [705.97].>Ian Lawton & Chris Ogilvie-Herald also devote a chapter of Giza the Truth  to ‘The Appley Affair’ giving more detail, particularly the battle that Ralph Ellis had to demonstrate that large chunks of his book, Thoth: Architect of the Universe, had been used by Appleby.<
The whole matter was further confused when Graham Hancock and Robert Bauval along with Colin Wilson, Andrew Collins, Christopher Knight, Robert Lomas, Simon Cox and Alan Alford issued An Official Statement Regarding Operation Hermes(a) declaring that they were unaffiliated with Operation Hermes, then and in the future.
Lightning struck twice when the second book of Appleby’s, Desert Fire, was also withdrawn from sale within days of publication in 2006!