Siddhara betta(Hill) is near Tumkur .Its around 3 hours journey from Bangalore.
Some more information about Siddhara betta :
It is Sacred Place where 9000 siddaru(Holy spritual men) made meditation and worship of Lord Shiva, They got Mooksha(Freedom) from this Eternal world .Here is famous temple suituated at the Top of the Hill. It is very difficult to Climb this rock Cultured beautiful temple.
A rocky hill with temple and caves at the top are the attractions here. Though the major crowd which visits is the one of pilgrims. This place also interests trekkers and other nature lovers. Cave exploration is a enjoyable experience.