The sound produced here has been compared to stampeding horses and roaring dragons. When you visit Hukou Waterfall, the second largest waterfall in China, you'll have a chance to make a grandiose comparison of your own. 

In the spring, the snow and ice begin to melt. As summer approaches, run-off swells the river to its full 100 meter (330ft) breadth, with spectacular results for photographers and tourists alike. The river suddenly narrows to one fifth that width, concentrating the energy of the torrent just before the fall. As the name "Hukou" (kettle spout) implies, the raging waters charge over the cliff side with deafening force.

The falls are renown for their capacity to produce rainbows. The masses of water crashing into the rocks below produce the ample mists necessary for the effect. The end result is both powerful and beautiful, especially on a sunny day. Summer, of course, is the best time to visit.