Archeologists are in the business of understanding the past, by observing, recording, and interpreting objects and items from history.
It could be as simple as an arrowpoint or pot, or as complex as the ruins of a prehistoric village.
But there are still some ancient artefacts that archaeologists are puzzled by. Natasha Harlow, Honorary Research Fellow in the Department of Classics and Archaeology at the University of Nottingham joins Kathryn Ryan to talk about them.