Not be confused with Pura Ulun Danu Batur on the rim of the caldera, this temple is at the head of Lake Batur in the crater itself. A 20-minute drive beyond Toya Bungkah, though not particularly large, this temple is highly revered for its water as the giver of life. The complex is actually a series of three temples; the one to visit is the farthest one set majestically into the side of the mountain, beyond Songan, the final village on the shore of the lake. Often before work is done in a given rice field in Bali, a priest and local farmers will travel to Lake Batur and take water from the source, which they will then carry to their lands to sprinkle on their fields. They will then pour any remaining water in to the irrigation system so that others may benefit. Given the success of rice growing in Bali, it seems to do the trick. Due to the sanctity that the Balinese place on the water, there is absolutely no swimming around here and you need to wear appropriate temple garb to enter.