It is well-known as the Red Sandstone topography, which development degree and quality are both rare in the world. There are steep cliffs in the East, West and South of mountain, only an old and rugged path on southwest slope is available for you to the top. You will find a plat land with 3,000-square-meter on the top. There the Heaven Door Temple was built in Song and Yuan Dynasties. Over 130 attractions include Dragon-subduing Cave, A group of Snails Viewing the Sky, Fragrant Dragon Head, Eye Stone, Longji Ladder to Heaven, etc. Getting a bird-eye's view from main peak, you will see the dangerous cliff and appropriate the fantastic attractions of cloud sea, cloud ribbon, cloud billow and cloud lake, etc.