The image of the Lord is a self-manifested one (SWAYAMBHU). Two stones inter twisted to from a Lion’s Head at the Top. Hence the Lord is called “PENUSILA LAKSHMI NARASIMHA SWAMY” In Telugu “PENU” means twist and “SILA” is stone.
After killing Hiranya Kasipa as Narasimha, Lord Vishnu married Chenchu Lakshmi in Bhairagikona, a place at a short distance from Penusilakonda and killed the Rakshasas who were torturing “Rishis”. The Lord, Vishnu used to visit the lake every Saturday and as evidence a Silver Umbrella rose from the Lake. The deity is a very powerful are renowned as the saviour of chaste people.