The results were announced by theArchaeology Institute in coordination with the conservation centre ofThang Long Heritage on December 11.
Excavation of twoholes covering over 100 square metres between February and December thisyear has uncovered cultural layers filled with architectural relicsfrom the Ly, Tran, Le to Nguyen dynasties.
It is thefirst time archaeologists have found the foundation buttresses from theLy and Tran dynasties at the location of Kinh Thien Palace.
Most notable, a huge drain from the Tran dynasty was found in the excavation.
Expert said the rich results from four digs in the Thang Long ImperialCitadel since 2011 have gradually revealed the main space of KinhThien Palace under the Le dynasty.
However, inferences on the central axis of the site from the Ly and Tran periods need further research.
A general and long term plan is necessary, but not just the exploratory excavation as what is being done now, they noted.-VNA