"The temple, located in De Doong village (locally meaning "Giang Dong"), is situated next to the Bang River flowing through the Hoa An basin. This basin was formed by the activity of the deep Cao Bang - Tien Yen fault. De Doong Temple is the only place among the attractions of the Cao Bang Geopark where visitors can experience life and scenery similar to that of a village in the Red River Delta, amidst a landscape of mountains and rivers.
De Doong Temple was built in 1429, initially to worship river and mountain gods who had contributed to the people of the former Nhuong Ban commune, Thach Lam district. The temple is associated with the legend of calming the river, preventing floods from destroying crops and causing suffering to the people, so later King Mac Kinh Cung also named it Giang Dong Temple. During the Later Le Dynasty (1427-1789), De Doong Temple was renovated and statues of Buddha and the Holy Mother were added to the worship, thus giving the temple the additional function of worshipping Buddha and the Holy Mother.
De Doong Temple Festival" The Dẻ Đoóng Temple embodies the folk beliefs of the community, with the hope and aspiration for favorable weather, abundant harvests, and peace and prosperity for the people and livestock. It is held annually on the 15th day of the first lunar month. On June 15, 1945, a ceremony was held here to celebrate the establishment of the Provisional People's Committee of Cao Bằng Province.

The Dẻ Đoóng Temple was recognized as a provincial-level historical and cultural relic by Decision No. 2486/QD-UBND dated November 4, 2008.