The Mongols created the world’s most powerful empire in the thirteenth century, conqueringChina and establishing the Yuan dynasty. Their military power was in doubt, however, after failednaval invasions in Japan and Vietnam.
According to historical records, the Vietnamese tacticsused against the Mongolian Armada were designed to prevent them from reaching the mouth of Bach Dang River by using hidden stakes that were driven into the riverbed in secrecy.
Using thelarge difference in tides, the Vietnamese successfully lured the enemy fleet into the trap,destroying or capturing perhaps as many as 400 vessels. Since the 1950s, approximately 700years after this watershed event, Vietnamese archaeologists have discovered a number of largewooden stakes in the midst of reclaimed paddy fields along the Bach Dang River. Excavationsand research were conducted which led to the identification of several stake-yard sites believedto be dated to the battle that took place in 1281 C.E., however, no remains of ships have beenidentified to date.