Pune, which is located at the confluence of the Muthi and Mula rivers, derives its name from the Punya word, which literally means "conflux of two rivers." It was referred to as Punaka Desha in certain old sources before becoming Punekavadi, Punevadi, and Kasaba Pune. The nearby Lord Shiva temple Punyeshwar is where the city earned its name, claims historian Mandar Lavate. Up until 1978, Pune's official name was Poona.