- Herodotus > Life > Early Travels: https://en.wikipedia.org/wiki/Herodotus#Early_travels ; https://www.secretofthepyramids.com/herodotus:

> For this, they said, the ten years were spent, and for the
underground chambers on the hill upon which the pyramids stand, which he caused to be made as sepulchral chambers for himself in an island, having conducted thither a channel from the Nile

- From https://news.ycombinator.com/item?id=39246398:

> According to the video series on "How the pyramids were built" at https://thepump.org/ by The Pharaoh's Pump Society, the later pyramids had a pool of water at the topmost layer of construction such that they could place and set water-tight blocks of carved stone using a crane barge that everybody walked to the side of to lift.

- "Egypt's pyramids may have been built on a long-lost branch of the Nile" (2024)
https://news.ycombinator.com/item?id=40410572 :

- Edward Kunkel - "The Pharaoh's Pump" (1967,1977) https://www.google.com/books/edition/_/Vq04nQEACAAJ?hl=en https://search.worldcat.org/formats-editions/4049868

- Stephen Myers: https://www.amazon.com/stores/Steven-Myers/author/B003GNIQ4K : "How the Great Pyramid Operated as a Water Pump" https://www.youtube.com/playlist?list=PLPD2zVdMCA-gPa6RqoEHX...

- Chris Massey: https://www.amazon.com/stores/Chris-Massey/author/B00DWXY3FU : "How were the pyramids of egypt really built - Part 1" https://www.youtube.com/watch?v=TJcp13hAO3U&t=401s

- Lingams, though, produce electricity; and there may be electrode marks on some ancient prehistoric possibly geopolymer masonry stones. AI suggested that low level electricity in geopolymer would more quickly remove water from forming "blocks".

- Praveen Mohan: https://www.youtube.com/channel/UCe3OmUXohXrXnNZSRl5Z9kA

- /? praveen mohan lingam: https://www.youtube.com/results?search_query=praveen+mohan+l...

- Was the Osireon a hydraulic lift facility without electricity? FWIU the Osireon is a floating megalithic stone block island over a different water source which flows when pressure is applied to it? [citation: one of the following yt videos IIRC]

/?youtube osireon https://www.youtube.com/results?search_query=osireion :

- "Secrets of the Osirion | Who Built Egypt's Biggest Megalithic Temple? | Megalithomania" https://www.youtube.com/watch?v=sx-zRw8HEAo&t=271s

> [...] it could be much older with its huge megalithic, perfectly cut blocks resembling those in the 4th Dynasty Valley Temple at Giza. Strabo, who visited the Osirion in the first century BC, said that it was constructed by Ismandes, or Mandes (Amenemhet III), the same builder as the Labyrinth at Hawara. John Anthony West says there were huge floods that occurred in the distant past and the river silt is evident at the site, so could easily be dated. The Osirion at Abydos in Egypt could have had therapeutic effects, according to Dorothy Eady (Omm Sety) who says she got healed by its waters, as did many others. It also has beautiful geometric 'flower of life' carvings on one of the uprights which have yet to be explained, and nubs, polygonal masonry and intricate, subtle striations and smoothing of the stones, which would not look out of place in ancient Peru. Whether it was 'discovered' by Seti, or whether he built it during his reign is discussed in this video.

- "Pre-Egyptian Technology Left By an Advanced Civilization That Disappeared" https://www.youtube.com/watch?v=K3uiMsqptOs

- "The Megalithic Osirion of Egypt: Live Walkthrough and New Observations!" (2024)
https://www.youtube.com/watch?v=-TtsKKYLxPM

- Osireion:
https://en.wikipedia.org/wiki/Osireion#Purpose

- Interglacial > Specific interglacials: https://en.wikipedia.org/wiki/Interglacial#Specific_intergla...

- Lake Agassiz > Formation of beaches: https://en.wikipedia.org/wiki/Lake_Agassiz#Formation_of_beac...