Behind the Philosopher's Path, about 200 meters up the hillside trail, there is a stone basin where water collects from a spring. The water is safe to drink. Locals bring bottles. Some come every day.
The spring is not marked on tourist maps. It is not listed on any official website. You find it by knowing which trail to take at the fork behind the Silver Pavilion, or by following the locals who carry empty bottles in the morning.
The water tastes different from tap water. It is softer, with a slight mineral finish that changes with the season. After heavy rain it runs faster and tastes cleaner. In summer it is cold enough to chill your hands.
There are three more springs further up the hill, but this is the one people use. Someone placed stones around it fifty years ago. No one knows who. The arrangement has not changed.