To date, 25,000 lichen species have been described worldwide. As living in communities, these mushrooms can live up to 4,500 years and are therefore among the oldest living creatures on earth. However, they are also threatened by species loss. In recent decades, up to a third of these organisms have disappeared. Nature around us is changing, landscapes and biotopes are disappearing rapidly. And with them whole cosms, which in their diversity and aesthetics tell of the sublime and interconnectedness. This reference to nature has largely disappeared in everyday life, leaving behind boundaries whose consequences can be clearly felt. Photography allows to sensualise these phenomena.