Introduction to Hell Valley: The mouth of Hell Valley is 3,800 meters above sea level, and the bottom of the valley is 2,500 meters. The wind and clouds in the valley are moving, the mist is hazy, and the jagged and weird peaks appear and disappear, so close that it is thrilling. Hell Valley is long, narrow and deep, with dense primeval forests, jagged rocks, flying springs and waterfalls, and a roar that shakes the sky.