Agsu District is located south of the Great Caucasian Mountains and on the plain of Shirvan. 6 villages, 3 territory units are mountainous. Relief of the district consists of mountainous, foothills and slanting flats. The mountainous zone is located at 700–1000m height above sea level. Relief of the mountainous zones is compound with rivers, valleys, ravines. Langabiz mountain chain is formed by small grey mountains from the banks of Goycay River to Pirsaatchay River. Its highest peak Sendelen (it is also known as "Sangalan" and "Bijo mountain") situated in the territory of Bijo village has the 929 m height above sea level.