Some facts gathered :
These memorial stones are not Veeragals, but Ancestor Stones or Veeragara Kallu , honoured by the Kuruba clans. Regular ancestral worship takes place in all the kuruba shrines scattered across Bengaluru. Kurubas have subsects , each group following a particular temple ( somewhat like the concept of " parish " ) , the sects are called Vokkalis. There are six or seven Veeragara gudis in and around Bengaluru,most of them, like this one, modernised. The other locations where Veeragara gudis are located : Benson Town, Begur, Ranasingapet , Bommasandra, Sarjapur. The Bommasandra temple stores all the holy copper and brass vessels (used in ancestor worship ) belonging to all the shrines of Bengaluru. Some priests can sing the ancient kuruba legends / puranas which are all Oral Traditions and only very recenty written down. Scriptures differ by " Mathas" ( based on regional and cultural differences ) Halumatha ( Milk ) followed by shephards, Jenumatha ( honey ) followed by those who live off forest produce....etc.
Interesting to see at least a few indigenous, aboriginal traditions still being preserved , though Vedic hinduism has swallowed up all ancient, tribal beliefs , homogenising them as a Pan-indian "Hindu Religion ".