There are also a few caves in Moc Chau you can visit, that might not be that impressive at the caves in Phong Nha, but can be worth a visit if you are in the area.
The most well known cave in Moc Chau is the Bat Cave, Son Moc Huong or Hang Doi. It is locatated in the northeast of the Moc Chau town with an area of 6,915 square meters, the cave is remarkable with beautiful stalactites and a winding path that leads to it. From Highway 6 you have to climb 240 steps to reach the cave.
Another cave can be found at On village, the Ngu Dong Ban On. It actually consists of five caves and is named after China’s five elements: metal, wood, water, fire, and earth. These caves are a bit off the beaten track and are poorly equipped with paths and lightning.