Phong Nha consists of two parts: Dry Cave and Water Cave. Dry cave at an altitude of 200m. According to geologists, this place in the past, which was an underground river flowing through the limestone mountains, is now exhausted. Seawater, wind and weather for thousands of years have eroded mountains into caves. In the cave are white stone arches floating like clouds and countless iridescent emerald green stone pillars, and there is a fanciful and diverse beauty of the cave. High and vertical cave cliffs are surrounded by stalactites. Under the shimmer of the torchlight, stalactites show all shapes and splendid colors. There is a block of a chicken, a toad, a block of a bamboo that stands upright on the water ... There is a raspberry-shaped block or a picture of a fairy or a fairy playing chess, a fairy dancing and singing ... The genius of the Creator has skillfully created for the stalactites to not only be beautiful in lines but also fanciful in color, a sparkling color like diamonds that cannot be described ... The narrow cave entrance is hidden in the heart But the deeper the mountain, the deeper it expands, making the viewer go from surprise to surprise.