Vaishno Devi (also known as Durga, Mata Rani, Trikuta, Ambe and Vaishnavi) is a Hindu goddess who is considered as a manifestation and form of the Supreme Mother Goddess, Durga also referred to as Adi Shakti in Hinduism. The words "Maa" and "Mata" are commonly used in India for mother, and thus are often heavily used in connection with Vaishno Devi. Vaishnavi was formed from the combined energies of Kali, Lakshmi, and Saraswati having the principal energy of Durga overall. The temple dedicated to her is located in Katra, India

Shrine board token from the 1990s, depicting the 3 pindis that represent Vaishno Devi.
Worship
Author Abha Chauhan identifies Vaishno Devi with the power of Durga as well as the incarnation of Lakshmi, Saraswati and Kali.Author Pintchman identifies with great goddess Mahadevi and says Vaishno Devi contains all powers and is associated with the entire creation as Mahadevi. Pintchman further states that, "Pilgrims identify Vaishno Devi with Durga (a form of Parvati)— whom many people oftenly name Sheranwali, "the Lion-rider"— more than with any other goddess".
The Appearance of Vaishno Devi to Shridhar and the story of Bhaironath
It is said that Bhaironath, a famous Tantric, saw the young Vaishno Devi at an agricultural fair and fell madly in love with her. Vaishno Devi fled into Trikuta hills to escape his amorous advances, later she assumed the form of Durga and cut off his head with her sword in a cave.Professor and author Tracy Pintchman narrates the story as, "About nine hundred years ago Vaishno Devi appeared in the form of a young girl and commanded a Brahmin named Shridhar from the village Hansali (next to present day Katra) to hold a feast (bhandara) for local people near Bhumika stream. At the time of feast, Bhaironath, a disciple of Goraknath, appeared and demanded meat and liquor. But Vaishno Devi told him he would get only vegetarian food, since this was a Brahmin's feast. Seeing her, Bhaironath lusted after her.
To escape him, she ran away stopping at various places on the trail up the Trikuta mountain. There places are now known as Banganga (Ganga river emerged from arrow), Charan Paduka (Holy footprints), Ardha Kunwari Or Ardh Kuwari —the place where she is said to have remained for nine months in a cave, — and finally at Bhavan, the cave that is now known as her home. There taking the form of Durga (the great goddess), she beheaded Bhaironath. His body held at the entrance to the cave, and his head landed further up the mountain at a place where a Bhaironath temple is now located. Bhaironath then repented, and the goddess granted him further salvation. In so doing, however, she laid down the condition that unless pilgrims coming for her darshana did not also get his darshana— that is, darshana of his head— then their pilgrimage would not be fruitful. Vaishno Devi later manifested into 3 small rocks (pindikas) and stays there to the present day. Shridhar began doing puja to the pindikas at the cave, and his descendants continue to do so even today".

A view of Vaishno Devi Bhawan
Professor and author Manohar Sajnani says, According to Hindu beliefs, the original abode of Vaishno Devi was Ardha Kunwari, a place about halfway between Katra town and the cave. She meditated in the cave for 9 months just like how a baby stays in its mother's womb for 9 months. It is said that when Bhairav Nath ran after Vaishno Devi to catch her. She reached near a cave in the hill, called up Hanuman and told him that "I would do penance in this cave for nine months, till then you should not allow Bhairav Nath to enter the cave." Hanuman obeyed the mother's orders. Bhairavnath was kept outside this cave and today this holy cave is known as 'Ardha Kunwari'.
Pilgrimage route
Pilgrims travel from the city of Jammu in Jammu and Kashmir to the village of Katra which is well connected by helicopter, rail and road. From Katra, starts the uphill journey to the Vaishno Devi Temple on foot. The total journey of the pilgrimage is around 13 kms. While on the way near the Trikuta mountain is the Banganga River. It is said that Vaishno Devi shot an arrow at the ground and brought forth the Ganga river to quench Hanuman's thirst. After Hanuman disappeared, Vaishno Devi washed her hair in the water.
The Banganga river is also known as the Balganga river, since "Bal" means hair and "Ganga" is synonymous with the Holy Ganga river. Pilgrims bath in the Banganga river to prove their purity. After Banganga is the Charan Paduka temple. Vaishno Devi stood on a rock and turned around to look at Bhairavnath before her escape and this rock supposedly contained her footprints. Her footprints are worshipped in this temple. After having a darshan of Charan Paduka, Pilgrims come across the Ardha Kunwari Temple.
Vaishno Devi meditated in this cave for 9 months, just like how a baby stays in its mother's womb for 9 months, to escape Bhairav Nath. After having a darshan of Ardha Kunwari, the pilgrims finally reach the Vaishno Devi Temple and go inside the temple to have a darshan of the 3 pindikas or pindis (holy rocks) which represent Vaishno Devi.
At last, pilgrims go to the Bhairav Nath temple. It is said that after Vaishno Devi killed Bhairav Nath, Bhairav Nath realised his mistake and pleaded for forgiveness. Vaishno Devi blessed him by saying that if pilgrims did not have darshan of his head, their pilgrimage will not be fruitful. Pilgrims have a darshan of Bhairavnath's head after going to Bhavan, Vaishno Devi's Temple. Aerial Tramways are available for reaching Bhairav Nath Temple which is around 3 kms from the Bhavan.