Based on the Shivagrha inscription, a public h2o job to change the program of the river near Shivagrha temple was undertaken in the course of the construction on the temple. The river, discovered since the Opak River, now operates north to south on the western side of the Prambanan temple https://rammandiradelaide.blogspot.com/2024/09/hanuman-mandir-south-australia-hindu.html