Dragon Well Spring in Hangzhou, China. Description there:<i><b>Dragon Well Spring</b>. It was named Longhong in Chinese.  It is said Ge Xuan and Ge Hong used to make elixir with the spring water during the period of the Three Kingdoms and the Eastern Jin. The water in the spring is clear and clear flowing all the year. The rocks arount the pool are grotesque. It is interesting to see a dividing line on the surface of the well water when it is stirred by a stick.</i>
Hans A. Rosbach
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>