(VOVworld) - A number of artifacts have been discovered in the southern area of the Ho Dynasty Citadel’s Trench in the central province of Thanh Hoa, revealing the original structure of the Citadel. According to the Ho Dynasty Citadel Heritage Preservation Center, excavators unearthed an area of 2,040 square meters, discovering a 61-metre wide guard trench and a macadam layer 5-10 centimeters thick. A 7-meter wide stone embankment was found in the same area. Archaeological finds included 89 rectangular limestone and schist pieces measuring 1.7 x 1.1 meters and various terra-cotta objects such as tiles, bricks, enamel pottery, and crockery dating from the Tran (13^th century), Ho (1350-1410) and Le So (1428-1528) dynasties, along with bullets, curling stones, iron arrows, and chisels. The newly-discovered antiques prove that the Ho Dynasty Citadel trench was not only a guard station but also a masonry workshop used during the construction of the citadel.