A tophet is a very old place where people used to bury their babies who had passed away.
Long, long time ago, people didn't have doctors or medicines like we do now. If a baby got sick and couldn't get better, they would pass away.
Parents would want to give their baby a good resting place, so they would bury them in a special area called a tophet. These places usually have lots of small and special stones called steles to mark each baby's resting spot.
Today, we can learn a lot about the people who lived a very long time ago by studying these tophets. It tells us about how people used to live and how they cared for their loved ones who passed away.