Point of interest 

Cobweb Houseleek

The felt-like cobweb houseleek (Sempervivum arachnoideum) is able to store water with its fleshy, rosette -shaped leaves. This allows the plant to colonize rocky and dry soils. A thin lichen cover or fine cracks and pores in the rock are often sufficient for the plant to find support and to grow. Since the houseleek grows very slowly, it is important that there are any other flowering plants to compete at the place.