The Blue Pools track is another must visit if you are on the South Island and near the Mount Aspiring National Park. The Blue River itself is a small river which flows within the Mount Aspiring National Park. The head of the river is south-east of the main range near the Mountain Eyetooth, and later on, the north and south branch join to form the main Blue River. Prior to the Blue River flowing into the Makrora river, it passes through a narrow gorge which is known as the ‘Blue Pools’.