When a site is excavated, it is also destroyed. That's why it's so
important to keep accurate, detailed records of everything on a site.
When archaeologists dig, they create a grid to keep track of where they find things. They also draw pictures and take photographs of everything they find.
All this information helps archaeologists re-create a picture of the site later. These records will be shared with other scientists
interested in that site. They're also left for future generations of scientists, like you!