The inside of the monument in Spain often known as the Menga dolmen
Miguel Ángel Blanco de la Rubia
Neolithic folks appear to have understood subtle ideas in science, akin to physics and geology, utilizing this data to assemble a megalithic monument in southern Spain.
Referred to as the Menga dolmen, it’s among the many earliest European megaliths, relationship to between 3600 and 3800 BC. Its roofed enclosure was constructed from 32 giant stones, a few of that are the largest utilized in such constructions. The heaviest one weighs in extra of 130 tonnes, greater than 3 times as a lot because the heaviest stone at Stonehenge within the UK, which was erected greater than 1000 years later.
“[In the Neolithic Period], it must have been very powerful to experience this building made with these enormous stones,” says Leonardo García Sanjuán on the College of Seville in Spain. “It still stirs you. It still causes an impression even today.”
García Sanjuán and his colleagues have now carried out detailed geological and archaeological analyses of the stones to deduce what information Menga’s builders would have wanted to assemble the monument, which is within the metropolis of Antequera.
Paradoxically, they discovered that the rocks are a sort of comparatively fragile sandstone. Whereas this implies a larger danger of breaking, the staff found that this was compensated for by shaping the stones in order that they locked into a really steady general construction.
Neolithic folks would have wanted some strategy to make the blocks match very tightly collectively, says Garcia Sanjuán. “It’s like Tetris,” he says. “If you look at the precision involved and how well each stone locks with each other, you have to think that they had an idea of angles, however rudimentary.”
The researchers additionally discovered that the 130-tonne stone, which was positioned horizontally on high to kind a part of the roof, had been formed in order that its floor rises within the centre and declines in the direction of the perimeters. This distributes power in an identical strategy to an arch, bettering the roof’s energy, says García Sanjuán. “To the best of our knowledge, this is the first time that the principle of the arch has been documented in human history.”
Menga – whose objective is unknown – can also be aligned to provide distinct patterns of sunshine within the inside throughout the summer time solstice and has stones which might be shielded from water injury by a number of layers of rigorously overwhelmed clay, which provides to proof supporting the builders’ information round structure and engineering.
“They knew about geology and the properties of the rocks they were using,” says García Sanjuán. “When you put all this together – you know, engineering, physics, geology, geometry, astronomy – it is something we can call science.”
There are Neolithic constructions in France that rival Menga in measurement, however how they had been constructed is much less nicely understood, says García Sanjuán. “As it stands today, Menga is unique in Iberia and in western Europe.”
“What’s surprising about this is the level of sophistication,” says Susan Greaney on the College of Exeter, UK. “The architectural understanding of how the weight distribution works, I’ve not seen that anywhere else before.” However she provides that that is maybe much less an indication of an understanding of science than of structure and engineering.
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