Dūkštai oak grove is the largest and one of the oldest natural oak groves in Lithuania. In the shade of oaks older than 200 years, many species of rare and endangered animals, plants, mushrooms and lichens find their habitats here. Here you can see as many as 7 species of bats, boars, great spotted woodpecker, black stork, owls, and other, smaller, creatures…The length of the trail is 2.23 km.