Drum Cave - Hang Trong
Hang Trong is one of the caves within Halong Bay, named because the wind blowing through the stalactites and stalagmites resembles drumbeats
Located opposite to Hang Trinh Nu (Virgin Grotto), Hang Trong (Male Grotto) has a giant stone statue of a boy who turns his face to Trinh Nu grotto. One still hears his vain scream in tune with the wind blowing into the cliff somewhere. Hang Trong is on opposite side of the calm bay, and accessible by guided tour or private charter.