A tumulus is a type of burial mound or earthwork that is often constructed over a grave. These mounds can vary in size and shape, and they are typically made from soil, stones, or other materials. Tumulus structures are found in various cultures around the world and date back to prehistoric times, serving as markers for important burial sites. In many cases, tumuli are associated with ancient peoples, such as the Celts or Scythians, who used them to honor their dead. Some tumuli contain grave goods, which are items buried with the deceased, reflecting the customs and beliefs of the society that created them.