Dating back farther than the Egyptian Pyramids or even Stonehenge, Newgrange is a Neolithic monument thought to be from 3,200 BC. It is historically significant for the wall art and artifacts that tell historians about cultural and religious practices from the era. The outer ring is composed mostly of white quartz, while the inside contains chambers and hallways. Human bones are deposited within the structure, illustrating its purpose. An opening in the roof, called a roof box, lines up with the sun as it rises on the day of the winter solstice, indicating not only the importance of solstices and equinoxes in ancient culture, but also an understanding of astronomy and a measurement of time based on the length of the day. Sites like Newgrange reveal how advanced ancient civilizations were, and remind us that we might not be the first ones in history to make important scientific discoveries.