Adjacent to Wat Phra Mahathat Woramahawihan Which is located south of the pond. Wat Na Phra Lan is on the east side of the temple. In ancient times, the villagers believed that it was a holy well. The water was clear and clean, with an unusual density than other wells. If anyone had drank water in this well, they would have good intelligence, good fortune, and would become a nobleman. In addition, the villagers believe that the water in this well can be used to mix medicines and sprinkle the spirits away, so they tend to draw water in this well for drinking according to their beliefs.