This is the confronting map depicting where at least 250 Aboriginal massacres took place across the country during the height of conflict between first settlers and Indigenous Australians.

The graphic map highlights the locations where the mass-murders took place and how many were orchestrated - a figure researchers believe is closer to 500.

The grim illustration has revealed the slaughters, which killed as many as 300 Aboriginals in one area, occurred as recently as 1930.

At least 6,000 Aboriginals were killed during the violent attacks inflicted by British colonisers, including many women and children.

This is the confronting map (pictured) which shows where at least 250 Aboriginal massacres took place in Australia, killing more than 6,000 Indigenous Australians

The majority of attacks occurred in the early to mid-1800s throughout New South Wales, Victoria, Tasmania, South Australia and the southern parts of Queensland, according to the University of Newcastle.

In 1865, at least 300 Aboriginals were killed by 'native police' in Queensland's far west near the New South Wales and South Australian border.

ABORIGINAL MASSACRES The most recent recorded massacres happened between 1900 and 1930. At least 206 Indigenous Australians were killed. 1929 - Callata Springs, NT 70 Aboriginals murdered 1928 - Coniston, NT 50 Aboriginals murdered 1920 and 1925 - Wave Hill Station, NT 30 Aboriginals murdered 1918 - Gulf of Carpentaria 11 Aboriginals murdered 1917 - Tennant Creek, NT 15 Aboriginals murdered Source: University of Newcastle Advertisement

Researchers claim the mass-attack happened after station owner, John Dowling, was killed, prompting his brother, Vincent, to seek revenge with a 'posse of settlers'.

'(They) found the Kullila camped on the eastern side of the river and chased them towards the Grey Range, shooting them down as they ran ... led by the native police,' the report said.

The most recent recorded attack happened between 1920 and 1929 in the Northern Territory, during which 70 Aboriginals were killed at Callata Springs, central Australia near the South Australian border.

In 1924, an Oenpelli Station assistant 'shot over 30 bush people' on horseback as a punishment for 'cattle killing'.

Thomas Crampton, the first white man to occupy land near Goondiwindi, NSW, in 1837, 'killed no less than 15 blacks' after spying them 'sitting in the tops of some trees armed with spears'.

One of the first massacres was recorded in 1794 when a British first settler and his servant were almost murdered in their home by 'natives from the woods'.

The servant was severely injured by 'spears and clubs'.

The grim illustration has revealed the slaughters, which killed as many as 300 Aboriginals in one area, occurred as recently as 1930 (stock image)

The majority of violent massacres (represented by yellow dots) were between 1800 and 1850 where white Australians used poison, fire and guns to inflict torture

A few days later, the same group of Aboriginals are believed to have attacked other first settlers before stealing their clothes and provisions. They were shortly 'killed on the spot'.

The grisly details of how settlers inflicted their attacks included flour laced with strychnine (poison now used to kill rodents), fire, muskets and even chained up the Aboriginals to shoot them before 'hacking and bludgeoning them to death with swords'.

Many 'human bones' have since been found decades after the murders. Some were buried in mass-graves and 'large mounds'.

The study, funded by the Australian Government, revealed 6,200 Aboriginal and Torres Strait Islander people were killed and an average of 25 Indigenous Australians were killed in each massacre.

Between 1900 and 1930, at least 206 Aboriginals were killed.

The most recent recorded deadly attack happened between 1920 and 1929 in the NT where 70 Aboriginals (stock image) were killed at Callata Springs, central Australia near SA border

The murders in the early 20th century are believed to have been more deadly than initial attacks in the 1800s because they were 'carefully planned' and a 'professional business'.

'I am surprised at at the number of times that we find that the state is present in something, or condoning it, or turning a blind eye,' lead researcher Professor Lyndall Ryan told The Guardian.

Ms Ryan claimed a number of massacres took place in NSW, however, people are unwilling to talk about it because the 'cone of silence' is still operating.