500-Year Old Submerged Temple Discovered In Odisha’s Mahanadi River. Researchers say the temple was submerged during floods in 1933. With the river changing its course due to flooding over a hundred years ago, an entire village including the temple were submerged at Nayagarh. An archaeology survey team of the Indian National Trust for Art and Cultural Heritage (INTACH) said that they discovered the temple recently after its tip partly surfaced. Reportedly, as per the locals around 11 years ago, the temple top was first seen above the water level and since then researchers have been tracking it. The construction style of the mastaka or temple top and the building material used to indicate that the 55 to 60 feet temple dates back to the late 15th or early 16th century.