“no one knows how exactly ancient people used Stonehenge. if you look from the center through a northeast arch toward the 'heelstone', you'll see the sun rise on the morning of the summer solstice, the longest day of the year. perhaps this provided information to make a calendar for planting crops. some scientists say the stones are lined up precisely enough to mark the start of spring, fall, and winter, and to predict eclipses of the sun and the moon.” – 'universe', young discoverer series. every year, thousands of visitors gather at the neolithic Stonehenge monument to celebrate the first sunrise of the northern hemisphere summer, that is, summer solstice.
