Lisselåsklack is a 2.5-hectare nature reserve on the top of a small hill, 7 kilometres south-south-east of Årsunda. Its main feature is a field of rounded stones, with well-preserved beach ridges. Apart from a couple of very old pines, the field has almost no tall vegetation. An information board is listed among the site’s services.

Visitors can walk along the path or road beside the stone field. The reserve has been protected since 1965, and the site was designated a nature monument in 1957. The county says this type of stone field is called a stone pavement. It forms when waves wash away the surface soil in very stony ground. At Lisselåsklack, the sea was level with the hill when the field formed. At the end of the Ice Age, just under 10,000 years ago, the hill was about 60 metres below sea level. The county describes the reserve as an example of this landform and says it is valuable for study.

Rules prohibit digging or otherwise damaging the ground, damaging trees or shrubs, deliberately disturbing wildlife, riding, taking wood, lighting fires, holding competitions, marking trails, or putting up signs or inscriptions. Check the reserve’s full regulations before visiting.