In India from the age of Ancient times, peoples of Maharashtra, Karnataka, Madhya Pradesh, Gujarat, Goa. etc. were worshiping Lord Shri Khondaba as Kuldevatha or Kuldaivath. Lord Shiva took avtar of Marthand Bhairav to defeat Mani and Malya Rakshas. That day was of Shudha Champasasthi. Since then Champasasthi is celebrated as "Khondaba Avatar Day". On Poush Poornima Shri Khondoba�s is married with Mhalsa hence this day is important and celebrated as three days annual "Yatra Utsav". Shri Korthan Khandoba in its origin is as "swayambhu" i.e. self originated. It is not carved by any sculpture or not established by any one.