Değirmenaltı is a place in Turkey where people used to grind wheat and corn into flour a long time ago. It's like a big machine that turns the grains into little pieces, almost like sand.
Nowadays, people don't use the degirmenalti for grinding flour anymore, but it's still an important part of the town's history and culture. People go there to see the old machines and learn about how people used to use them to make flour.
The degirmenalti is also a nice place to go for a walk and enjoy the scenery. There are lots of trees and a little stream that runs nearby. So, if you ever visit Turkey, you might want to go to degirmenalti to learn about the history of flour-making and also enjoy the nature.