Wat Tham Chetawan, located in Na Noi district, used to be called Wat Kru Ba Noi after a monk who meditated in a cave for three years. The temple is full of sacred spots influenced by Myanmar beliefs, like a white jade Buddha image and a pagoda similar to one in Myanmar. Visitors can explore the cave where the monk meditated, but watch out for slippery paths! It's a cool spot for those into spiritual vibes and unique cultural experiences.