Hồ Động Tiên (Fairy Lake) takes its name from a completely enclosed shallow lake within, where fairies are supposed to swim.
Hang Trong is one of the caves within Halong Bay, named because the wind blowing through the stalactites and stalagmites resembles drumbeats
Two kilometers south-west of Ti Top Beach is the Me Cung Grotto or Bewitching Grotto. It formed on Lom Bo Island, and seen from afar, the entrance is like the roof of a house denting the island's side.
The Tam Cung Grotto or Three-palace Grotto is situated in the centre of Ha Long Bay, 5 km from Sung Sot Grotto to the northeast. The grotto itself is divided into three parts; after threading the stone cracks, you find the first chamber. Many beautiful forms can be garnered from the rocky shapes.