This beautiful site is a must if you visit Jiuzhaigou, a more famous site nearby in the Himalaya foothills in Sichuan Province, China.  It is quite a climb, from about 3,000 meters at the entrance to 4,000 meters at the top, the length is about 3-4km, so it is quite steep.  You would go up along the river "Yellow Dragon" or Huang Long, to view the waterfalls and mineral deposit pools (all in yellow).  All paths are set in stone steps, as the management has taken all the natural hazards out, and porters can be hired to carry you up in a sedan chair.  Although this is frowned upon.  Oxygen canisters are available at the entrance, I didn't need it, but used it anyway when I reached the top.