Nguom Ngao Cave

Cave in Cao Bang

About 4km from Ban Gioc Waterfall, Nguom Ngao Cave is one of the most spectacular cave systems in Vietnam. Created by an underground river, it extends for several kilometres underground; villagers sheltered here during the 1979 war with China. Visitors are permitted in one section, where a 1km-long concrete path and excellent lighting have been installed.

Frequent buses link Cao Bang and the road that leads to the cave, a trip of two hours (80,000d, hourly from 5.30am to 6pm).

A second, even bigger branch of the cave system is said to extend almost all the way back to Ban Gioc Waterfall, though there’s currently no visitor access to this section.