Wat Tham Chiang Dao is a great cave with a pond with a beautiful turquoise water in which swim big fish well fed by the visitors. A covered staircase leads to the entrance to the main caves. One is illuminated and can be visited by yourself without any worry, you just have to pay an entrance fee (40 THB) to pay for electricity. All the other caves open to the public require to hire of a local guide (200 THB) with a petroleum lamp.