Hang Gieng Vooc is situated in the ecological restoration of  Phong Nha Ke Bang National Park - central Vietnam.  This cave is over 1 kilometer far from the popular tourist site - Mooc Spring.  The entrance of the cave is 100 meters far from Ho Chi Minh West.

The cave is relatively small in size with entrance is around 0.7 meter high and 2.3 meters wide.  The total length of the cave is estimated over 400 meters. Inside the cave, height varies from 3-20 meters while width from 5-20 meters. Though the cave is pretty short in length, it owns dozens of stunning rock formations come in various types of shapes (straws, stalactites, stalagmites, pillars, cave shawl, cave shields, etc.) 

Along the cave there are 4 subterranean lakes, the first one is 100 meters far from the entrance (100m in length, 3-10m in width), the second one is 130 meters far from the entrance (30m in length, 2-5m in width), the third one is 200 meters far from the entrance (40m in length, 3-5m in width) and the last one is right at the end of the cave(50m in length, 3-4m in width).
 

Hang Gio is a grotto with 50 meters in length. It is situated in the ecological restoration of  Phong Nha Ke Bang National Park - central Vietnam. Hang Gio is 5 meters far from Ho Chi Minh West and 20 meters from Chay Bridge. 

The entrance of Hang Gio is 7 meters high and 10 meters wide. There is a stream inside the grotto which is originated from a watercourse of Chay River.