The middle gorge is surrounded by mountains and steep, mountain roads are circuit, low-lying forms natural levees, here the stream is slowing down, merged into a green lake, all the stars and moon in the sky can be seen in the lake. One deep lake in the scenic spot likes a mirror, mountains and clouds are at a glance, the water in the lake overflows on the dam, as if ten thousand horses galloping and throwing pearls, her soft crystal become smart. People call this the "Pearl pond".