Egyptians aligned pyramids with stick and its shadow: Study
The Pyramids of Giza were aligned without the use of modern technology as engineers used shadows cast during the equinox to line up the 4,500-year-old structure, an Egypt-based study has proposed. Scientists tracked the path of the Sun as it was exactly above Earth's equator, to help them draw straight lines from east-west and north-south, called the 'Indian circle method'.