The Nan-an tribe outside the eastern area of Yushan National Park is located at the end of Provincial Highway 30. It is a mixed tribal settlement for Bunun's takbanuaz and Isbubkun tribes. The takbanuaz community migrated from kasibanan upstream of Xiuguluan River back in the day, and the Isbubkun tribe migrated from Dafen to the current location due to the eviction policy during the Japanese colonial period. Nan-an tribal settlement was formerly known as Lamungan or Namuan, which means a basin surrounded by mountains. The rivers in the basin cover a vast and fertile area. The people of the Nan-an tribe grow corn, rice, and traditional Bunun crops. Some of them adopt organic farming and incorporate ecological conservation, and have made the brands of "First Rice Field at the Foot of Yushan National Park" and "Walami" well-known.