It is more affordable to bring a few elderly people free tickets, that is, the legs and feet are not good and the stone steps can't climb up. I only swim the two holes in front. The third hole has not been seen before and returned the same way. The tour guide is very enthusiastic and arranges the boat to pick up the hole. The rest of the physical strength continues to swim and exit. The stone clock milk lighting and running water inside are good, especially cool, it is a summer resort.