Women called cows home

For centuries, women in Sweden called their cows home with a sound called kulning. Now, kulning has been embraced by many, including universities as a form of art. But from medieval times until the mid-20th century, the sound could be heard every summer, ringing across the mountains. Reaching up to 125 decibels, kulning can be heard over 5 km (1 mi) away. Since cattle tend to wander off, they needed to be able to hear the herdswomen calling them.