Unknown #7 - What does the cow say? Mystery Cache

In 2013 everybody started wondering: "What does the fox say?"

But some days ago we heard some cows talking to each other and now we wonder if you can help us:
"What does the cow say?" If you understand the language, you will get the coordinates to a box hidden on the way to La Plaza Noruega. The box is a normal plastic box 9x9x4cm.