Audakā (Audaka) was a name of a castle surrounded by water, situated at Prāgjyotiṣpura (Pragjyotishpura). It was ruled by Narakāsura (Narakasura). He had a palace within it. As the entire Audakā (Audaka) was surrounded by water, it was quite safe. For this very reason, Narakāsura (Narakasura) captured sixty thousand beautiful women and kept them in Audakā (Audaka). It was situated at the top of Maṇi (Mani) Parvata in present day Assam. The scholars think that the Maṇi (Mani) Parvata was actually a hill near Guwahati, the state-capital of present Assam. So it can be assumed that Audakā (Audaka) was also situated near Guwahati.