"Modern primitives, naturmensch, wandervogel, bohemians, reformers, wayfarers, and vagabonds are all expressions that evoke a tone of something wholly apart from the orthodox.
So why Germany? What was happening there in the 19th century that caused a phenomenon like this to erupt so big?
Germany had always made a virtue of their late submission to Latin civilization and had glorified the natural man and woman with all of their virtues and vices. Over 2000 years ago (about 51 B.C.) Julius Caesar noted of the Germans: "The only beings they recognize as gods are things that they can see, and by which they are obviously benefited, such as sun, moon and fire; the other gods they have never even heard of."
Read more, some great photos: http://www.hippy.com/php/article-243.html