In the Tibetan language, the word "Zhagana" means "stone box." Also known as the "Yama Temple," it is a complete city built of natural stone. The topography of the site is like a giant palace. It is said to resemble an ancient city that has been constructed entirely of rock and stone. This place can be called a natural wonder. For several centuries, this natural stone city was an important station on the edge of the ancient trade routes. Inside the stone city, there are four villages and one temple. Dongwa Village and Sangla Temple are located in the center of the stone city.