Located in Yanqian Village, Longwen Town, Meixian District, Meizhou City, Green Cave Pond is a natural cave washed by limestone, and is the first land underwater totally flooded cave discovered in Chinese mainland. Underwater stalactites are well developed, colorful, mainly red and green, beautiful and very beautiful. The depth of the pond is more than 50 meters, the water quality is clear, there is no undercurrent, the space is large, and the water temperature is constant at 20 °C-27 °C.
Legend 1, the 86-year-old mrs. Li Bom of Iwazen Village told that from the time she married into Iwazen Village, she heard that for hundreds of years, green grotto pond has been the place where the Li clan of Iwazen Village and surrounding villages punish villagers who violate the township rules and regulations and feudal rules: village women do not abide by women's roads, and men in the village do thieves and thieves, etc., they may be locked in iron chains and put into bamboo "pig cages" and plunged into the water to die, called "immersion in green grottoes", which was the most severe punishment at that time. In the local area, children do not obey and cry at night, and adults go to the "green cave" as long as they say that they are no longer obedient, and the children are immediately silenced.
Legend 2: Uncle Li, a villager in Hengzhuang Village, adjacent to Yanqian Village, Longwen Town, Meixian District, Meizhou City, confirmed that his grandfather had told him that there was a man named Xiao Yaoyi in the village at that time, who looked like a man with great talent and specially stole the property of the local unscrupulous rich family to help the poor villagers, known as a rogue in the folk. In 1945, Xiao Yaoyi unfortunately fell into the hands of his uncle and patriarch Xiao Yaoming and others at that time, and was put into a "pig cage" with his hands alive and put into the green cave pool and died.