A multi-storeyed underground palace, of immense historical importance, has been found during excavations by the Archaeological Survey of India (ASI) at Navratangarh in Gumla district in Jharkhand.
The structure is believed to be around five and a half centuries old and date to the Naga or Nagavanshi dynasty.
The excavations being carried out by the ASI in and around the palace have yielded many important ancient remains. The department will carry out further studies to unravel the mysteries behind it.
Navratnagarh was declared as a heritage site in 2009 for conservation.
Durjan Sal ruled the kingdom for the longest. According to the evidence found so far, he had built the fort here in 1571. It is said that this fort was of 9 storeys, so it was given the name of Navratangarh. The ruins of this fort have been there for years and have been an object of curiosity for local tourists, as well as archaeologists and historians.
After the excavations started this month, for the first time, it was known that the king had built a grand underground palace as well. The legend is that the king built the palace to protect against any attack by the Mughal rulers. A secret tunnel passage has also been found in this underground palace, whose excavation is still going on.
On the basis of the structure, it is being speculated that there must have been a secret place to house his treasure of diamonds and other jewels.