The reserve consists of old, frail pine forest on nutrient poor soil.
A pine by only 7 cm diameter at breast height are age specific to 130 years! The area is located at the Kullbodåsens eastslope of Österdalälven. The bedrock consists of bredvallsporfyr and the soil is poor block moraine. A torraka has traces of six fires while living pine at most have three fires bunded. The many fires have probably depleted the soil, which resulted in weak growth. The forest is little affected by forestry. The only carvings in the area are collecting wind-felled trees.
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