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Stonehenge
Stonehenge is located on the Salisbury Plain in Wiltshire, England. The outer ring of vertical sarsen standing stones, around 4m and 25 tons, are topped by connecting horizontal lintel stone. The inside ring is of smaller bluestones.
Stonehenge, built around 2500 BCE, is aligned with the movement of the sun. Such large structures were indeed possible only after agriculture, which allowed the surplus such that there can be a set of people not involved in food production. Stonehenge was more than a late neolithic calendar. It dictated when crops should be grown but, possibly, was also used for spiritual purposes.
The oldest structure with astronomical alignment is Nabta in the Nubian desert. See here: www.scientificamerican.com/article/ancient-alignments/
See also this list of archaeoastronomical sites by country on Wikipedia.
Two miles north of Stonehenge is Woodhenge. It has been theorised that the former was meant for dead people, while the latter was for alive ones. Woodhenge is where the celebrations occurred for life, fertility, etc. on summer solstice. See also: doi.org/10.1017/S0003598X00086592
Stonehenge
Stonehenge is located on the Salisbury Plain in Wiltshire, England. The outer ring of vertical sarsen standing stones, around 4m and 25 tons, are topped by connecting horizontal lintel stone. The inside ring is of smaller bluestones.
Stonehenge, built around 2500 BCE, is aligned with the movement of the sun. Such large structures were indeed possible only after agriculture, which allowed the surplus such that there can be a set of people not involved in food production. Stonehenge was more than a late neolithic calendar. It dictated when crops should be grown but, possibly, was also used for spiritual purposes.
The oldest structure with astronomical alignment is Nabta in the Nubian desert. See here: www.scientificamerican.com/article/ancient-alignments/
See also this list of archaeoastronomical sites by country on Wikipedia.
Two miles north of Stonehenge is Woodhenge. It has been theorised that the former was meant for dead people, while the latter was for alive ones. Woodhenge is where the celebrations occurred for life, fertility, etc. on summer solstice. See also: doi.org/10.1017/S0003598X00086592