The stele of Meli-šipak is a really old rock that has some writing on it from a very long time ago. It was made in ancient Mesopotamia, which is now the country of Iraq. This rock was made by the people who lived there a really, really long time ago (about 3700 years ago!).
The rock shows a picture a king named Meli-šipak and has some writing on it that talks about how he was a good and fair king. The writing is in a language that not many people can read anymore because it has been so long since it was written.
The rock was discovered by some people who were digging in the ground many years ago. They found it buried in the dirt and carefully took it out of the ground without breaking it. Then they put it in a museum so that people could look at it and learn about what life was like a long, long, long time ago in Mesopotamia.