Ísterplana Moor is the largest nature reserve on Kinnekulle. The nature reserve got a varied vagetation with part of the area being so called Alvar land. An alvar is a biological environment based on a limestone plain with thin or no soil and, as a result, sparse vegetation. Alvar land is very rare but found on various locations in northern Europe as well as in North America.
The challenging habitat becomes the home for unique types of vegetation and the limestone structures makes a distinct backdrop.