
Sri Saligrams is considered the direct symbol of Lord Vishnu, They are found only in Mukti chhetra and Damodar Kunda (north-west of Nepal). According to the religious text of Devi Bhagwate (and other scriptures) to kill demon Jalandhar Lord Vishnu have to destroy Sati Brindha's sati dharma. When he did that Sati Brindha gave four seeming desecrations to Lord Vishnu to become stone, grass, tree, plant. To wash away this reaction Lord Vishnu took four avatars (incarnations). He became stone (Sri Saligram) grass (kush) tree (Pipal) and plant (Tulsi). Since this time the Saligrams are considered to be most auspicious to behold and to worship. The worshipper knows no fear and by Sri Saligram's mercy the worshipper is blessed to attain all desirable things; worldly comforts, good wife, good sons, good health and wealth etc. It is all by the blessings of Lord Mahavishnu that His pastimes are being served. It is an excellent service for devotees of Lord Narayana.
The Saligrams are basically described as fossil-stones and characterized by the presence of discus marks. Saligram-stones (black stones in which fossil ammonites are embedded) are the most celebrated universally. Worship of these stones is widespread and dates back to a distant past. They are worshipped in temples, monasteries and households all over the world, as visible and natural emblems of Vishnu. They are also worshipped in quasi-religious functions like house-warming (grha-pravesa, vastu-puja), pacificatory rites of different sorts (santi), marriages and funerary rituals.

The legend, related at length tells us that Lord Vishnu for benefit of mankind in kaliyuga comes in earth in the form of Saligram and in tulsi tree. Like the worship of Shiva in the form of a Linga, the worship of Vishnu in the shape of a Saligram, is aniconic in character. Saligrams are naturally found in the river Gandaki in Nepal. They are never made by man. In the worship of Saligrams, no initiation is required; there is no special hymnology or specific procedure of worship, nor any need for a qualified priest or master of ceremonies. Worshipped by regular bathing saligram stones in curds, ghee, milk or water will give untold merit and will bestow all the benefits.
Saligram-stones are found only in the river Gandaki, which is a Himalayan stream, celebrated since antiquity as Narayani, Saligrami, Hiranvati and Hiranyavati. The epic Mahabharata speaks of its sanctity (Bhishma-Parva). The Puranas also describe it as a sacred stream in which all the gods and titans abide. By merely looking at it, one would eliminate all his mental dement’s, by touching it his bodily sins are burnt , and by sipping its water the verbal demerits are destroyed. One who comes into contact with this sacred stream will be liberated from the cycle of birth and deaths, even if he be a sinner.
There is a lake at the source of the Kali-Gandaki, called Damodar-Kunda at Nepal. The lower Gandaki is well known as Mukti-Natha-Kshetra, also called Saligrama-Kshetra. The sacred stones are largely found on the banks of Kali-Gandaki near Tukche, between the two mountains Dhavala-Giri and Annapurana. Damodara-Kunda is a Saivite place of pilgrimage. These spots where saligrama-stones are found located within the Nepal territory. Actually there are four spots in the river within Nepal jurisdiction, where the sacred stones are picked up.
Whether one has real devotion or not, if he worships a saligrama-stone with prostration before it, he will surely get emancipated from the cycle of phenomenal existence.
The person who offers a daily service for the saligrama stone will be freed from the fear of death, and he will cross over the stream of births and deaths.
Following are different forms of Shaligrams
2nd Pose Shaligram, Ananta Shaligram, Aniruddha Shaligram, Auspicious Big Shaligram, Damodar Krishna Shaligram, Damodar Shaligram Delhi India, Auspicious Big Shaligram, Damodar Krishna Shaligram, Damodar Shaligram, Devi Mansarovar Shaligram, Exotic Saligram, Ganesha Shaligram, Garuda Shaligram, Golden Ananta Shaligram, Gopinath Dwarka Shaligram, Govind Shaligram, Hayagriva Shaligram, Hiranya Garv Shaligram, Kalki Shaligram, Kalp Vriksha Shaligram, Kalpa Laxmi Conch Shaligram, Kamal Narayan Shaligram, Kamal Varaha Shaligram, Keshav Shaligram etc.

In the Vedas, shiva is an aspect of the god Rudra, not a separate god. However, a joint form Rudra-Shiva appears in early household rites, making Shiva one of the most ancient Hindu gods still worshipped today. By the 2nd century BCE, Rudra's significance began to wane and Shiva rose in popularity as a separate identity.
Shiva's symbols are the bull and the linga. The latter symbol is historically associated with the phallus, but is not generally perceived as such by worshipers. Other depictions of Shiva have his hair in matted locks and piled atop his head like an ascetic and adorned with the crescent moon and the Ganges River (according to legend, he broke the Ganga's fall to earth by allowing her to trickle through his hair).
Shiva the Hindu god of destruction is also known as Nataraja, the Lord of Dancers (In Sanskrit, Nata means dance and raja means Lord). The visual image of Nataraja achieved canonical form in the bronzes cast under the Chola dynasty in the 10th century AD, and then continued to be reproduced in metal, stone and other substances right up to the present times. The Chola Nataraja is often said to be the supreme statement of Hindu art.
dance induces trance, ecstasy and the experience of the divine. In India consequently, dance has flourished side by side with the terrific austerities of the meditation grove (fasting, absolute introversion etc.). Shiva, therefore, the arch-yogi of the gods, is necessarily also the master of the dance.
The opposite hand, the upper left, bears on its palm a tongue of flames. Fire is the element of destruction of the world. According to Hindu mythology at the end of the world, it will be fire that will be the instrument of annihilation. Thus in the balance of these two hands is illustrated a counterpoise of creation and destruction. Sound against flames, ceaselessness of production against an insatiate appetite of extermination.
in the significant contrast of the incessant, triumphant motion of the swaying limbs to the balance of the and the immobility of the mask-like countenance. Shiva is Kala, meaning time, but he is also Maha Kala, meaning “Great Time” or eternity. As Nataraja, King of dancers, his gestures, wild and full of grace, precipitate the cosmic illusion; his flying arms and legs and the swaying of his torso produce the continuous creation-destruction of the universe, death exactly balancing birth. The choreography is the whirligig of time. History and its ruins, the explosion of suns, are flashes from the tireless swinging sequence of the gestures. In the beautiful cast metal figurines, not merely a single phase or movement, but the entirety of this cosmic dance is miraculously rendered. The cyclic rhythm, flowing on and on in the unstayable, irreversible round of the Mahayugas, or Great Eons, is marked by the beating and stamping of the Master’s heels. But the face remains, meanwhile in sovereign calm.
History of India