A dendroglyph is a special kind of drawing that is made on a tree. Imagine a tree like a big pencil that you can draw on, but instead of using a regular pencil, people long ago used sharp objects like knives or rocks to make their drawings.
These drawings can tell us a lot about the people who made them. Sometimes, they were made to show what animals were in the area or to tell stories about battles or important events. Other times, they were just for fun!
Today, we use dendroglyphs to learn about the history and culture of the people who made them. It's like looking back in time to see what life was like a long time ago. But we also make sure to take care of the trees so that they don't get hurt by too many drawings.