In the itinerary of Thiên Cung – Đầu Gỗ – Ti Tốp, after visiting Thiên Cung and Đầu Gỗ, one needs 10 minutes boating to the Chó Đá Islet or Stone Dog Islet.

Some 8 m up the islet one can figure out a piece of stone in the shape of a dog sitting with its back to the sea, standing guard for the safety of seagoing boats for millions of years.