Hans Prockl has recorded conversations with people in the Isen Valley for 50 years. His book "Isental Protocols" is based on 17 stories based on tape recordings between 1973 and 2023.

The focus was on wandering shepherd Florian Feußner, who drove his flock of 800 sheep through the Isental between 2015 and 2017. The sheep farming industry has lost its high reputation, he says. Because modern agriculture makes sheep dung superfluous, flocks of sheep are now even a “thorn in the side” of many farmers.