While walking along the Baku Boulevard, you can notice these circles on the ground. They’re not just a decorative pattern, there’s a small secret behind them 🤫

You need to stand in the center of the circle and clap your hands (I know it sounds strange, but try it 😅), and you’ll hear an unusual squeaking sound, similar to a duck 🐥

The most surprising part is that only the person standing in the center can hear this sound. People outside the circle won’t hear anything