Boodagavi, in Koratagere taluk has a hill, Siddharabetta. It is an attractive centre of pilgrimage. An interesting feature of the hill is that it is hollow inside and one can ascend the hill which is in the midst of a forest and come down to its base inside through the hollows. There is a samadhi of Saint Gosala Siddheshvaraswamy which is visited by pilgrims from the surrounding parts, particularly on Mondays. It has a cave-temple enshrining a Linga at the foot of which is a perennial spring in the form of a well, which is said to be the source of the Suvarnamukhi river.