Located within the Kaeng Tana National Park, this site was established by Luang Pu Khamla Pakuno. Originally, the area around Wat Tham Wae Sin Chai was a mountainous forest. After Luang Pu Khamla settled here for meditation, he collaborated with local villagers to develop the temple and construct residences and meditation spaces for Buddhist practitioners. Inside the temple, there is a pathway leading to a small cave known as Tham Wae Sin Chai, which houses a reclining Buddha statue, a statue of the hermit, Phra Mae Thorani (the Earth Goddess), and many other Buddha images. In front of the cave, a beautiful waterfall cascades down from a small stream, creating a stunning curtain of water. Additionally, there is a Vihara housing the Emerald Buddha and a large standing Buddha statue that can be seen from afar when crossing the bridge over the Mun River.