Dabrowa Swietlista w Pernie, where 100-year-old tree stands of sessile oak dominate, is a forest island located within agricultural sites. It overgrows a small hill which is a part of bottom moraine.

There have remained all types of vegetation species in undergrowth of the forest which are characteristic for that type of habitat. Among them there have been stated 7 protected species.

There is Dabrowa Swietlista nature reserve on the area of the refuge.