[Amazing] Cave paintings: Up to 40,000 years Old - Many with colours! - Most inside dark caves! - In many places! http://ngm.nationalgeographic.com/2015/01/first-artists/walter-text Wikipedia: https://en.wikipedia.org/wiki/Lascaux Also Lascaux:
Those are truly incredible. It's haunting to think about it - the people who made these paintings have long turned to dust, but their mark on the world remains.
Seems they are trying to show off their high technology of their era that they had found. Cave paintings as well as pyramids. - Painting inside deep dark caves! They had to likely use fire for illumination. Perhaps fire should be good for drying the colour paints they used. - They seemed knowing their colour paints can be sustainable and long-lasting while encountering environmental changes. - They also used some painting tools for drawing and spraying paints. High tech - When considering tens of thousand years ago! - Similar paintings existed in many places across several continents (that could be interconnected as one whole large continent thousands of thousand years ago?). How did they learn from each other through what kind of communications for transferring their painting technologies? Or they invented some very similar painting technologies by themselves individually for each place? Just like pyramids in many places!? ???
It is now appears that civilization is at least twice as old as once believed. There is evidence that there was at least one civilization before the end of the last ice age and that what ever brought an end to the ice age also destroyed that civilization. Ocean levels rose 400 feet and in quick bursts. The story of Atlantis flooding according to Plato falls exactly at the same time modern scientists say the last ice age ended. According to the Greenland ice core samples the last ice age ended virtually overnight, something bad happened causing a worldwide catastrophe. The survivors of this early civilization spread out to South America and Egypt eventually stating over. See Graham Hancock (Finger Prints of the Gods) and Robert Shcoch on you tube.
https://en.wikipedia.org/wiki/Fingerprints_of_the_Gods https://en.wikipedia.org/wiki/Robert_M._Schoch https://en.wikipedia.org/wiki/Plate_tectonics Also Rand Flem-Ath: Atlantis Under the Ice / Atlantis Blueprint - 04-13-13 ... Video for When the Sky Fell: in Search of Atlantis ▶ 1:00:47 Apr 19, 2013 - Uploaded by Where Did the Road Go? Radio His first book, When the Sky Fell brought the idea to the public eye, and his follow-up, The Atlantis Blueprint ... The Flem-Aths make a strong case for Lesser Antarctica being the site of Atlantis. Like the world being turned upside down by disaster, looking at the world with Antarctica on top is a key concept of changing our perceptions of geography and history. It was the only interior title page I considered.
Regarding your last question, I think the latter is a more probable explanation, i.e. they came up with these techniques independently (of course, one shouldn't discount the possibility of various tribes/people migrating in search of food over vast distances, we do know that sort of thing occurred pretty regularly). Speaking of the pyramids, I, personally, don't think that the existence of pyramids in various places all over the world is necessary proof of communication between those places (for example, South America and Egypt). People built pyramids simply because it's the most obviously stable and practical structure they could could come up with that was possible to build with their level of technological development.
As I have been many times thinking there must be a way for communications in the old prehistoric age, now I suddenly realised that in case of a wise-man tried to pick up an egg of a flying Dinosaur as his pet to watch it growing up at his home/cave. With a flying Dinosaur as his pet, it's possible to go/fly to anywhere. That means the scenes in movies can be true, a man flying with flying Dinosaur. This could be a very popular/common way of transportation/communication for many people in the old prehistoric age. LOL https://en.wikipedia.org/wiki/Dinosaur
For Egyptian Pyramids, it seems hard to find their original construction method/technology, yet. http://www.livescience.com/32616-how-were-the-egyptian-pyramids-built-.html The pyramids of Giza were built using techniques that took centuries to develop. Credit: WitR / Shutterstock.com https://en.wikipedia.org/wiki/Egyptian_pyramid_construction_techniques Average core blocks of the Great Pyramid weigh about 1.5 tons each, and the granite blocks used to roof the burial chambers are estimated to weigh up to 80 tons each.
There was a documentary film I watched about the possibility of irrigation system supplying/feeding water for drinking, planting and gardening in living homes located at the top of a high mountain inside a desert. After 'pumping' water 'automatically and continuously' to the mountain top, the water then can be used to flow around the whole mountain with small water tracks system. They guessed the automatic continuous pumping process should be carried out by manual labour, possibly by a large size rotation device/construction driven using human foot. The film was an attempt (or just guess) of reconstruction how people could possibly carry out this task. I recall there was no convincing or reliable explanation/conclusion from the film. Moving water from a lower-level storage tank to a higher-level storage tank is definitely possible, like the following: Ancient Egyptian irrigation methods http://www.waterencyclopedia.com/Po-Re/Pumps-Traditional.html Human-powered devices traditionally were used to move water short distances and up low grades. This irrigation wheel in Japan was still being used in 1958 to irrigate a small plot.
World's largest dinosaur footprints discovered in Western Australia Newly-discovered prints left by gigantic herbivores are part of a rich collection of tracks belonging to an estimated 21 different types of dinosaur Hannah Devlin Science correspondent Tuesday 28 March 2017 https://www.theguardian.com/science...ur-footprints-discovered-in-western-australia The prints indicate enormous animals that were probably around 5.3 to 5.5 metres at the hip. Photograph: Damian Kelly/University of Queensland/EPA The prints, found along the Kimberley shoreline, belong to about 21 different types of dinosaur, and are thought to be the most diverse collection of prints in the world. Photograph: Damian Kelly/AFP/University of Queensland/Getty Images