In accordance with the Shivagrha inscription, a general public water challenge to change the class of the river near Shivagrha temple was carried out through the construction in the temple. The river, determined as the Opak River, now operates north to south around the western side from the Prambanan temple https://shreehanumanmandiraustralia.blogspot.com/2024/09/the-shani-dev-temple-in-adelaide-sacred.html