A Damaru (Sanskrit) or damru (Devanagri) is a two – headed drum used in Indian culture.
Damaru or damru is an instrument of Lord Shiva.
It is said that damru was created by Lord Shiva to produce spiritual sound and cosmic energy through which the universe is created.
In other words Damaru influences the movement of energy in the universe.
Damru is basically tied with Lord Shiva trishul
Sound or echo produced by Damru “Bamm” is used as prefix to Shiva name as Bholey….Bamm Bamm Bholey
The Jyotirlingas is regarded to be a sacred object that is a representation of the supreme deity Lord Shiva. Jyothi in literal sense means radiance and Linga is the sign of lord Shiva. The worshipping of the shivling is considered to be the most sacred of all other forms of worship of Lord Shiva. In all the shivalingas exists the Jyothi swarupa of Lord Shiva, out of these, there are 12 that are the most prominent. They are called the 12 Jyotirling or the Dvadasa Jyotirlingas. The Puranas talk about the sacredness of these shivlings. There is benevolent presence of the divine in these places.
As the Shiva Mahapurana relates, it was once that Lord Brahma and Vishnu had an argument over supremacy of the creation? In order to settle this debate, Lord Shiva himself appeared as a huge pillar radiating light all over and piercing the three worlds. This infinite pillar of light the Jyotirling then cooled down into a huge mountain of Annamalai (Arunachaleshwara Temple). Brahma lied that he had found the end of the pillar while Vishnu accepted defeat.
The 12 Jyotirlings are the shrines where Lord Shiva appeared in the form of a fiery column of light. Out of the 64 Jyotirlingas originally, there are 12 that are considered the most sacred and holy.
The name of each of the Jyotirlinga is obtained from its presiding deity and considered to be a different manifestation of lord Shiva.
Har Har Mahadev