A marked path leads south from the Kronoberg castle ruin. After walking towards Evedal for about an hour, you reach a majestic and prominent esker, which is known as Evedalsåsen. It was created about 10 000 years ago when the inland ice melted.
In several places on the esker you can find what are known as kettle holes. These formed when a block of ice, which was embedded in the gravel, melted. Mixed woodland grows in the Evedalsåsen nature reserve and this is typical for eskers.