Mirror Lake is so named because of its ability to reflect the images of the surrounding mountains and forests. The lake at an altitude of 2,410 m is in a sheltered section of the valley running east west which produces its glassy reflective surface.The Lake was featured in the Zhang Yimou movie Hero. The outflow of “Mirror Lake” is through the “Rize Gully” a travertine ramp of small ponds and natural bonsai trees and bushes that lead directly to one of the great sights of Jiuzhaigou - The Nuorilang waterfall.