On October 27, 2019, an excursion to the Altiaghach National Park was organized by the Department of Geography and the Environment of Khazar University within the course program of Biology and Hydrology subjects. The National Park is located in the south-east of the Greater Caucasus, in the administrative territory of Khizi and Siyazan regions. During the field study, students first took the Route II according to the subject of biochemistry course. Here they walked through the major tree types as Caucasian oaks, Caucasian ash, Oriental beech, European ash, Silver birch and through the shrub species such as various leaved hawthorns, blackberries, medlar, paliurus, dog rose, hips, etc. Thus, they learned interesting information about these trees and species and about the conservation of their natural landscapes, the restoration of flora and fauna. Students got interesting, extensive practical knowledge about the mammals on the territory of the Altiaghach National Park - roe deer, brown bear, wild boar, lynx, raccoon, rabbit, fox, squirrel, wolf; From birds - pheasants, common wood pigeons, quails, nightjar, wild eagles, partridge, true thrush etc. The students saw the brown bear’s cub and learned how after being kept in there it was later released to nature. Subsequently, within the subject of hydrology, practical work was carried out on measuring water velocity and water consumption in the river, and river velocity was measured by the fin method.