Only small areas of the Rhön landscape are essentially open: the raised bogs (Hochmoore), the rock outcrops and the stone runs. These habitats are home to highly specialised species. The raised bogs of the Long Rhön - the Red Moor (Rotes Moor) and the Black Moor (Schwarzes Moor) are floristically important links between the northern and Alpine raised bogs. Here, for example, can be found sundews, crowberry and cottongrass. Growing amongst the rocks of the volcanic mountains are rare species such as Cheddar pink, sweet william catchfly, oblong woodsia and fir clubmoss.