On the way from Wanshan Village to Duona Village sits the Mount Longtou which is a typical example of meander core. Jhuokou River has a big turn here. After long years of erosions， accumulations， a flat spatial sand river bed is formed which makes a wonderful camping spot. Also river intercepting divides the range of the dragon-like hill into two halves. The shape looks like a dragon spitting a bead. That's how the name "Longtou" (which means dragon head) comes from. The river flows even more rapidly after passing through the mountains. Large-sized pebbles block the channel， producing layers and layers of white water. Walking near the running water and look up， you will see the mountains extend afar which gives rise to the feeling that man is so tiny.