<unk> <unk> <unk> <unk> <unk>  Passage: La montagne la plus haute du pays est le Mont Agou à 986 m d'altitude. The longest river is the Mono River with a length of 400 km. <unk> <unk> <unk>  Question: How long was the Mono River?<unk>Question: How long was the Mono River?
400 km