The tiger cave is located in Zhen Yi Island, where the cave is due to geological effect caused by quartz sandstone rock fragmentation, scouring and erosion of natural caves, he, there is a big hole in the above, here there is a small hole. According to local villagers, made in the lake before the cave once lived named tiger, tiger hole. Later because the storage dam lake, "where the tiger does not know to go, leaving only the tiger hole empty".