When a person dies but his body is not recovered what is buried on his tomb?

When a person dies but their body is not recovered, a tomb typically bears a symbolic representation, such as a marker or headstone, that acknowledges the individual. This memorial may include the person's name, dates of birth and death, and sometimes a personal inscription or epitaph. In some cases, a placeholder or empty casket may be used for burial, allowing family and friends to have a physical site for remembrance and mourning.