The hills of the rocky northern end of the city (Vijayanagar) on the banks of the Tungabhadra sheltered the monkey kingdom of Vali and Sugriva according to which of the following texts?

Ramayana

The rocky northern end of the city (Vijaynagar) on the banks of the Tungabhadra had hills, these hills sheltered the monkey kingdom of Vali and Sugriva mentioned in the Ramayana.