Thach Dong Cave

Thach Dong Cave is a limestone karst cave on Thach Dong Hill in My Duc Ward, Ha Tien City, An Giang Province, near the Vietnam-Cambodia border. The cave enshrines Tien Son Pagoda and is associated with the folktale of Thach Sanh. Known for its stalactites, stalagmites, narrow chambers and hilltop views over rice fields and the Ha Tien plain, it is listed among the historic Ha Tien Ten Scenic Spots.

Visitors climb stone steps to the hilltop entrance and enter a series of natural limestone chambers containing stalactites, stalagmites and Buddhist altars of Tien Son Pagoda. Inside are dimly lit passages, shrines, and openings that let in natural light. From the hilltop and cave openings there are panoramic views of surrounding rice fields, countryside and Ha Tien town. The site combines cave exploration with temple visitation in a compact, forested hill setting.

Part of the Ha Tien Ten Scenic Spots (Ha Tien Thap Canh) celebrated since the 18th century during the Mac family period in Ha Tien. The cave has long been a landmark in local literature and folklore, notably the legend of Thach Sanh whose story is linked to the cave's chambers.

Houses Tien Son Pagoda, an active Buddhist pagoda inside the cave where locals and visitors pay respects. The site exemplifies the Vietnamese tradition of cave pagodas and remains a place of worship, pilgrimage and folklore heritage for the Ha Tien community.