Namaskar folks:
Kiratas was the aboriginal of the ancient India and how with the creation of Vedic literaure, Kirata
as the aboroginal was term as the low born men, and try to bring these people into fold of Brahamism(Vedic) Hinduism is shown below:

According to Srimad-Bhagavatam and Bhagavad-gita, anyone, including so-called low born men,
who may take shelter unto the Lotus Feet of Lord Krishna or His devotees, is sanctified by initiation process.


upon translation is;

Kirata, Huna, Andhra, Pulinda, Pulkasa, Abhira, Sumbha, Yavana, members of the Khasa races
and even others addicted to sinful acts can be purified by taking shelter of the devotees of the
Lord, due to His being the supreme power. I beg to offer my respectful obeisances unto Him.
(Srimad-Bhagavatam 2.4.18)

In the purport of this verse Srila Prabhupada describes the Pulindas as the Greeks, from whom Western civilization has descended, and the Hunas as the Europeans, who later inherited the Greek legacy. The Khasas are the Chinese, or Far-Eastern peoples. The Kiratas are described in the
purport as aboriginal peoples from the Kirata province of "old Bharata-varsa." However, it should
be noted that Bharata-varsa is the ancient India and comprised of Nepal also. In another place Srila Prabhupada describes Kiratas as synonymous with Nisadas, residents of present-day Africa:



The kirata people were the worshippers of Siva and they were meat eaters and drinkers and they looked like pillars of gold with their shaven heads.
Siva abode is Mt Kailash which was also the regions of the Kiratas.

The Origin of Shiva:

The word Shiva has root in the Kirata or Borok race, not in the Vedas because Shiva as god
is not mentioned in it. Shiva is hybrid of two Kirata words, simani means Gyan or knowledge and Kaiba, means five, i.e. Si+Ba=Siba>Siva>Sibarai>Sibrai . That means a god who has knowledge
of five elements of life, that is earth, fire, water, air, and sky, that is cosmic rays which forms the life. That is one who has created life in this world or creator of life in the world. Other meaning can be
one who made us perceive or feel five senses in our body, that is who is the soul of the boy. It is this Sibrai converted to Shivai in Sanskrit. From this five shiva is said to have five face and named as “Panchanan.”

Tagera Nyingmaphuma is personified as Lord Siva (Kirat scripture) and is also mentioned as Kiratas/tribal God in Ancient Works of Vedic Literature:
The scrips in Mahabaharata depicts this:

We should recall that as early as the Mahabharata we find the legend of Siva Mahadeva,
the Great God, taking the guise of a Kirata, with Uma with him as a Kirata woman, to test Arjuna when he was practising religious penance in the Himalayas: a legend which may have
its germs in the following vers of the Sata-rudriya section of the White Yajurveda (XVI, 7):

Asau yo vasarpati nila-grivo vilohitah
utainam gopa adrsrann vdaharyah: sa drsto mrdayati nah

May he who glides away, whose neck is azure, and whose hue is red, he whom the herdsmen,
whom the girls who carry water have beheld, may he when seen be kind to us."
(Trans. by Ralph T. Griffith, Benares, 1899.)
And this is quite a high exaltation of the status of the non-Aryan hill people, the Kiratas, when
the Supreme God with his consort was made to take up the guise of a Kirata hunter and his
wife Sabari, as Kirati woman.


In the episode of Siva meeting Arjuna as Kirata, accompanied by Uma also in the
guise of a Sabari or a Kirati woman, in the Himalaya regions, when Arjuna went there
to propitiate Siva by his austerities with a view to obtain the boon of the Pasupata weapons
from the Great God himself, as narrated in the Kirata-parvan section of the Vana-parvan of
the Mahabharata.

na tvam asmin vane ghore bibhesi kanaka-prabha
upon translation;
"O thou that art shining like gold (addressing Siva in the form of Kirata), dost thou not
fear in this terrible forest" (IV, 35, 18).

So in other word Siva who is considered as Kiratas and tribals God, and in Vedic Hinduism Siva
is seen as the supreme God and so if these people were the worshipers of Siva, weren't the Srimad-Bhagavatam and Bhagavad-gita contradicting itself by saying Kiratas and other aboriginal
as the low born men.

I have some excerpt from "Khaptad Region in Mythology" by Shiva Kaj Shrestha

Quoting Bhagabat Purana, Vallava Doval states that Lord Shiva was borned in Naga Tribe.
Atkinson (lbid, p. 362) based on facts and local traditions concludes that Khasa, Kiratas, Nagas
and Hunas were tribes of "Mountains"(Hima1ayas).
It is very possible that the mythological Naga people were Shaka-Magars who were termed as
Kiratis in Nepal and Raj-Kiratis in Kumaun in India.

In Vayu Purana, Kiratas are mentioned along with "Shabaras" and "Pulandas". In Far-Western
Nepal till 30-40 years ago one could hear of "Sabari" salt traded by Saukas or Vuyasis (mongolic people living in Vyasa Himal area). Famous Indian author Suniti Kumar Chatteriji in his book Kirata-Jana-Kriti quotes an ancient prayer (in the 1st page)
which is as follows:-

speaks for itself.

It is therefore many scholars also have seen that Siva is the God of Kirata(tribal) and later it
was Aryan who took Siva as their own God and Hindunized/Aryanized it so basically
Siva is seen more as Veda Hindu God than tribal God.

As one scholar said "To begin with, the kipat system and the mundhum are traditionally
uncontested metaphors of Kirata culture. Similarly the worshiping of
Tagera Nyingmaphuma or the supreme deity was a pan-Kirata symbol. But with the
abolition of kipat system and the simultaneous influence of Hinduism, these symbols
have lost their strength considerably. Since Tagera Nyingmaphuma, is often personified
as Shiva, who is notonly considered tribal God but also one of the Hindu pantheon, he
cannot be claimed by the Kiratas as their exclusive God" ---Politics of Culture:
A Study of Three Kirata Communities in the Eastern Himalayas), 1999 by Tanka Bahadur Subba


According to G.P Singh, "Saivism, Saktism, Tanticism and Visnavism --- the four important
sects or forms of Hinduism also became popular amongst the Kiratas. It is very difficult to
ascertain the exact period, which marked the emergence of Saiva, Sakti and Trantric cults
as popular cults in the kiratas society.
However, on the basis of information contained in the literary texts and other collateral evidence
it can be easily affirmed that a large section of the Kirata population in ancient times had
abiding faith in the worship of Siva, Mother-Goddess or Sakti and Devi, par excellence
and in the Tantric practices. Some of them came under the impact of Bhagavata cult too. Siva, generally conceived as a non-Aryan deity, secured a prominent place in Kirata pantheon.
It can be roughly asserted that Siva worship must have begum among the Kiratas
in the mountainous regions of the Himalayas in pre-Vedic times before the advent
of Aryans. That is why, Siva(Kiratesvara=the God of the Kiratas) has been considered as pre-Aryan God. On the basis of an episode as described in the Mahabharata, as well as, the Kiratarjuniyam of Bharavi the Kirata can be identified with Siva." pg. 238,
Kiratas in Ancient India by G.P Singh, 1990.


Therefore this is one example of pre-Vedic God taken into the Veda religion which is known as Hinduism today.

Namaskar,
                   jpg