The walls were found as museum staff were restoring a group of Cham temples. 

They are 1.9 meters tall, 0.65 meters wide, and 2.46 meters apart, said Ly Xuan Hai, director of the Binh Thuan Museum.

Hai, an experienced researcher of Cham culture, said the bricks used to build the walls share the same color and size of those used to build the temples. It is believed that the time of construction of the walls has links to the temples, which date back to the eighth century.

The two walls, found underground at the base of the temples, form an entrance that he said it could have functioned as an eastern main gate to the temples.

The museum has suspended its restoration work after finding the walls, and reported the discovery to the Ministry of Culture, Sports and Tourism. It has proposed further research on the walls by archeologists.