A burial mound, also known as a tumulus or barrow, is a raised earth structure built to cover a grave or burial site. These mounds were often constructed by ancient cultures as a way to honor the deceased and mark their resting place. They can vary in size and shape, depending on the customs of the people who built them. Burial mounds can be found in many parts of the world, including regions associated with the Mound Builders in North America and the Celtic cultures in Europe. Some mounds contain valuable artifacts, providing insights into the beliefs and practices of the societies that created them.