The reserve „ Łęg nad Młynówka” (Mixed Forests on the Młynówka River) is one of the protected areas of the mixed forests in the valley of the Upper Liswarta River. The reserve covers almost 90 hectares, which means it belongs to the large areas of this kind. It is a relatively young reserve established in 2006. The reserve, located in the forest district of Panoszów, aims at preserving the piedmont ash tree mixed forest.