Phong Nam is an amazing valley with a winding river and limestone Karst mountains.
Foreigners are required to get a special permit to stay overnight. These are easily sourced, same day, in Cao Bang city.
Phong Nam is an amazing valley with a winding river and limestone Karst mountains.
Foreigners are required to get a special permit to stay overnight. These are easily sourced, same day, in Cao Bang city.