Na Cave

The name Na Cave comes from the stone itself.

Inside this limestone mountain, stalactite masses have built up over thousands of years into shapes that people look at and see a ripe custard apple. Nobody invented the name. People saw the likeness, and that is what they called it.

Na Cave lies in the village of Lấp, inside Xuân Sơn National Park. The village is in the Tân Sơn area of Phú Thọ province. The cave sits on the way to Lưng Trời Falls. It is one of the caves the park has placed on its official guided route, along with Thổ Thần Cave, the nature museum and Ngọc Falls.

Before the cave itself, the way in deserves a word.

The Phú Thọ tourism website describes the approach. The path runs through damp vegetation and across small streams. Then it climbs more than 100 stone steps to the mouth of the cave. It is not a paved road at all. There is no elevator and no concrete railing along the way. It is a path of the forest and the mountain, in the plainest sense.

Standing at the top in front of the cave, a visitor finds that the entrance is not wide. The same source calls it a narrow slit. To step through it is to step from daylight into darkness. Inside, the cave is dark, and natural light from outside reaches only a certain distance in from the entrance.

Two things inside draw the most attention, and both the park's own website and the tourism site mention them. One is the stalactites shaped like custard apples. The other is a set of stone tiers that look like small rice terraces in the heart of the mountain.

The custard apple shapes are stalactites left by water seeping through limestone. Minerals in the water settle in layers, very slowly, and give each one its own unusual form. The same process, in other places in the cave, makes layered surfaces that look like rice terraces. Nobody built them and nobody carved them. They are the work of water and time.

From the cave, the park's route goes on to Ngọc Falls. Those who come by the route from Lấp village can instead join the path to Lưng Trời Falls.

Na Cave is not a grand cave like Phong Nha or Paradise Cave. It has no great hall, no dazzling lights and no boats carrying visitors deep inside. It is a limestone cave of the Phú Thọ mountains in its original state, with a narrow entrance, real darkness, and stalactites that formed not to be beautiful but because that is how nature works.