Cumulated with the Nam Yen Cave and the nearby hot springs this is a nice half day trip especially if you end it with a relaxing meal at the Kaeng Nam Hu Rae Restaurant sitting in one of its small huts on stilts installed on the course of the river. You can also play in the water (especially children) or go kayaking. A typical Thai address which is about 1.5 km from the cave and 1 km from the hot springs (GMap location and details here).
Phra Chaison Cave (Tham Phra) is a temple and when you visit a temple in Thailand there are some rules to know and follow :