There are many caves and grottoes
distributed throughout the stone
islands of Hạ Long Bay. The most
famous are concentrated in the
central zone of the World Heritage
area, such as: Thiên Cung (Heavenly
Palace Grotto), Ðâu Gỗ (Driftwood
Grotto), Sửng Sôt (Surprise Grotto),
Bồ Nâu (Pelican Grotto) and Ba Hầm
(Three Shelter Lake). There are also
other caves and grottoes situated
far from Ha Long’s coast, such as:
Tiên Ông, Hang Hanh and Soi Nhu.
The formation developed through
various forms of erosion over
thousands of years. There are still
many sealed caves and grottoes,
formed in the carbonate mountains
but not yet having an entrance.
Eventually, they will be discovered
through the effects of nature or
man.
Support Online 
