The Zalgiriai cognitive walkway was established in Zalgiriai wood which abounds with marshes, meadows, homesteads and occupies an area of 1231 ha. The total area of Rupkalvių marsh (3410 ha) this wood is least of all influenced by the civilisation. There grow centuries old oaks that are not the characteristic trees of the marshes. Other main tree species are birches, black alders, white alders, pines, firs, aspens, ashes, willows and other deciduous trees. The Žalgiriai wood represents the whole flora of the Nemunas delta regional park. Though a bit different is Kulynu forest where firs and pines prevail but on its outskirts the composition of flora is similar to that of Zalgiriu wood. The cognitive walkway which is 1860 m long has been built in the reserve of the Žalgiriai village. The aim of the reserve is to conserve and expose the last remaining settlement of former “marsh people” and their way of household managing.