Trong Mai is situated on the south-west side of Ha Long Bay, 5km from the tourist wharf near to Dinh Huong Islet. The islet with the height of over 10 m looks like a pair of Cock & Hen in the sea. The image of the islet is the symbol of HaLong Bay.
Their tiny legs support heavy bodies, and it appears that one strong wave could throw the two stone blocks into the sea. However, hundreds of millions of years have passed, and the Trong Mai is still there.