This is a image which fixed at Tirumala Hills showing the great devotional flow This is another  image which fixed at Tirumala Hills showing the great devotional flow  In the Nallamalas forests there is an amazing flow which is neither water flow nor wind flow .It is purely   Devotional Flow. Daily number of Devotees visits the Temples which are exits in these region. This seems like river ganges flow from Gangotri to kalighat . hence it is a Great Devotional Flow From Sri Sailam ( Sri sailam hills)To Sri Vari Sannidanam (tirumala hills) .In This flow  region there are 5 famous temples ie, Sri SailaM, Tripurantakam, MahaNandi, Ahobilam and  Tirumala hills exists.  The above picture and below given video links can give full details  about Great devotional Flow.                                Nallamalla's Location:-       The Nallamalas (lit."Black Hills") (also called the N