Prehistoric structures refer to buildings and monuments created by early human societies before the advent of written history. These structures include megaliths, such as Stonehenge, and dwellings made from natural materials like wood and stone. They provide insight into the social, cultural, and technological practices of ancient peoples. Many prehistoric structures served specific purposes, such as religious rituals, burial sites, or communal gatherings. Examples include dolmens and tumuli, which are types of burial mounds. These constructions reflect the ingenuity and adaptability of early humans in their environments, showcasing their ability to create lasting landmarks.