the portal doorway of the archaeological site of stonehenge is aligned to coincide precisely with
Archaeoastronomy and Stonehenge The prehistoric monument of Stonehenge has long been studied for its possible connections with ancient astronomy. The site is aligned in the direction of the sunrise of the summer solstice and the sunset of the winter solstice. Archaeoastronomers have made a range of further claims about the siteâ€™s connection to astronomy, its meaning, and its use.
Stone Age The Stone Age was a broad prehistoric period during which stone was widely used to make implements with an edge, a point, or a percussion surface. The period lasted roughly 3.4 million years[1] and ended between 8700 BCE and 2000 BCE with the advent of metalworking.[citation needed]