The devout spend the entire month of Sravana in  austerities and worship of Shiva, culminating in the Sravana Purnima on Raksha  Bandhan day, as His trident represents all three, sattva, rajas and tamas. The  elephant skin attire indicates that he is beyond pride; the tiger skin  symbolizes his going beyond lust, and the snake around his neck represents  wisdom and eternity.
The Shivalinga signifies the  basic principles of advaita: non-dual, indivisible, non-doer, non-enjoyer,  unattached, without qualities. The Dakshinamurthy invocation describes Shiva as  the youthful guru, facing southwards, teaching his elderly disciples through  silence, with the jnana mudra. The Lingashtakam sings of the glories of the  formless advaitic linga, symbol of the cosmos, Brahmanda.
The Shiva Mahima Stotra sees him  as the Inexpressible Truth. The three-eyed Shiva’s blue stained neck is a  symbolic reminder of His capacity to remove poisons (the undesirable) from the  world. The Yajur Veda describes Shiva as the master-yogi and the repository of  knowledge; He is Mahadeva, the great God. The Panchakshara Mantra, “Om Namah  Shivaye”, is a timeless chant of the name of Shiva, the inscrutable yet  easy-to-please Ashutosh.
Bhishma in his discourse on  Dharma to Yudhishtar in the Mahabharata’s Shanti Parva, describes the  observance of the Mahashivaratri fast by King Chitrabhanu, who, in his previous  birth as Suswara the hunter, roamed the forest in search of game. Once he had  to spend the night atop a tree, and he kept himself awake by shedding tears in  remembrance of his family and by plucking and dropping the leaves of that tree.  Unconsciously, he ended up “worshipping” the linga embedded in the earth, with  offerings of bael leaves, and tears.
This story represents every man’s  journey of the Overself, passing through the jungle of the mind, with its  conscious thinking and subconscious desires, where the wild animals of lust,  hatred, greed and jealously roam and which have to be subdued. This we can do  by rising above them, just as Suswara climbed up the tree. The bael leaves,  sacred to Shiva, with three leaves on one stalk, represent the working and  surrender of the Ida, Pingala and Sushmna nadi to the Higher Self, Shiva, the  tree representing the spinal column in Kundalini literature. Suswara’s  nightlong vigil is a call to alertness and discrimination, his fast represents  the ability and need to balance his excesses with austerity, and the dawning of  the day symbolizes the awakening into the cosmic consciousness, through the  dark night of the soul. 
To some Shiva is the embodiment  of asceticism. In his fierce Rudra aspect, He is the God who releases men of  bondage and wanders in cremation grounds. To others, he is the Universal  Father, Bhole Baba, who blesses all without prejudice. From Lalleshwari in  Kashmir to Karaikal Ammaiyar and the Nayanars of Tamil Nadu, from Vivekananda  who reportedly had a vision of Shiva at Amarnath to Ramana Maharishi who found  Him in the Arunachala mountain, Tiruvannamalai, abhaktas and advaitists have  all been drawn to the magnetic appeal of Shiva.
Ananda Coomarswamy sees Shiva as  the fountainhead of all Indian dance and culture traditions. Fritjof Capra  views the Shiva tandava, the primordial dissolution and creation, as an  allegory of the movement of sub-atomic particles, drawing parallels between  Indian mysticism and nuclear physics. So Shiva is anadi, with neither beginning  nor end.   
Courtesy and Copyright Times of India
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  3. Siva – His Cosmic Form and Dance
  4. The Great Night of Shiva and Parvati
  5. Many aspects of Shiva