It
    is one of the important pilgrimage center of tamilnadu.Though Hindus seek
    god in the form of idol, it is also their strong belief that god can be
    worship in the form of light or Flame. The Karthigai Deepam festival when
    the big flame is lit atop the Thiruvannamalai hills draw a huge crowd and
    devotees. The Sculptures in the pillars and the idol lingam are very huge
    and enticing that tey make one wonder at the renowned. A large number of
    foreign as well as domestic tourists and aspirant for spiritual solace and
    solitude congregate here. Thiruvannamalai has become an international center
    of study in spiritualism.