Arpa river starts at an altitude of 3200m and originates from the northwest of Artsakh. The total length is 126kms (90kms in the territory of Armenia).
The upper river is a rapid mountain stream that flows through the gorge and has a great fall. Then the river flows near the famous waterfall of Jermuk and takes.
The gorge of the river Arpa is unusually picturesque. The area is also famous for its caves, where as a result of excavations unique objects dating back to V-IV millennia B.C. had been found by the archaeologists