Daduhe Grand Canyon starts from Wushe Town, Hanyuan County, Ya'an City, Sichuan Province in the west to Jinkouhe District, Leshan City in the east, with a total length of about 26 kilometers, the width of the valley floor is generally 70 to 200 meters, locally less than 50 meters, the maximum width of the valley shoulder is about 8 kilometers, and the maximum valley depth reaches 2600 meters.
