There is a deep fierce kund (deep & small water body) located amidst the dense forest. It is about 3 Km. from Amaravati. No one can even dare to peep into it. Viraadh was buried at this place, after he was killed by Shri Ram.
Valmiki Ramayana 3/2, 3, 4 all chapter Manas 3/6/3, 4 .
