From Gaujiena, the Forest Trail winds along several large swamps: Melnsala, Sloka, Kaulezers and Tetersala, with “Paris” in the middle (some time ago, a baron who lived on this side loved name the houses of his gamekeepers after European cities). The common buzzard and other birds of prey are often spotted in the area. There are various specially protected habitats here: bogs, mires, old or naturally boreal (northern) forests, old mixed broadleaf forests. There is a protected European larch alley near Trapene, and many trees in the alley have reached formidable size. The alley is particularly important for maintaining the diversity of various insect species.