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Isolated from humanity and technology, some far-flung corners of the world still cling to ancient practices – including cannibalism.

Though their numbers are dwindling, these tribes still exist – with outsiders keen to develop a greater understanding of their way of life.

Lucky photographers and researchers have made contact and come back with incredible stories, but others have not survived to tell the tale.

Many of these groups live on remote islands and hard-to-reach locations, practising cannibalism for religious and ceremonial reasons.

Daily Star Online below examines some of the tribes that are still cut off from the rest of the world and obeying century-old traditions.

The Asmat tribe

(Image: AFP via Getty Images)

The Asmat people live in 100 villages in the south of the New Guinea Island.

The prolific hunters are known for their wood carvings, sculptures and brutal practices.

Its members allegedly murdered and ate a Rockefeller heir nearly 60 years ago.

Michael Rockefeller, who was 23 at the time, got into trouble when his boat overturned off the coast of south-west New Guinea.

He swam 10 miles to shore and was then speared through the ribs by one of the men.

Rockefeller was smashed around the back of the head and killed – at which point the tribe began their ritual.

(Image: AFP via Getty Images)

The Asmat people hunted their enemies and coveted their skulls.

Their brains were removed and the nasal parts were closed in order to prevent so-called evil spirits entering the bodies.

His ribs were broken with an axe, his sternum ripped out, his arms and legs cut off and his entrails pulled out – all while the men were chanting.

Author Carl Hoffman wrote in Savage Harvest: “They shook the brains out onto the leaf of a palm, scraped inside the skull with a knife to get every last bite, then mixed the mass with sago, wrapped the leaf up, and roasted it on the fire.

“This food was special.”

Aghori monks

(Image: Getty Images/500px Unreleased)

The Aghori monks of Varanasi feast on human flesh as part of their rituals and live near cremation sites.

The mysterious tribe chew the heads off live animals and meditate on top of corpses.

Its members use a combination of marijuana, alcohol and meditation in a quest for spiritual enlightenment.

However, the group do not kill anyone for use in their ceremonies.

(Image: CNN)

They obtain corpses floating down the Ganges River, which families place in the water if they can’t afford a cremation.

During ceremonies, they chant mantras and make offerings to Hindu god Shiva.

Freelance photographer Tamara Merino spent time with the group and said: “They are people that have so much love and respect for people, animals and nature … it’s just as beautiful as any other religion is.”

The Korowai tribe

The Korowai people of West Papua, Indonesia, practise witchcraft and still reportedly eat human flesh.

Members of the tribe encourage the stories when they receive Western visitors.

Their first documented contact with the outside world was when a group of scientists met with the clan in 1974.

Italian photojournalist Gianlunca Chiodini spent several days with the tribe.

He said: “I really wanted to visit one of the most genuine and remote tribes in the world.”

“The Korowai live in the heart of the rainforest, where they’re not yet exposed to the modern world, so they still maintain many of their age-old traditions.”

(Image: Getty Images)

The Korowai believe mysterious deaths are attributed to the “Khakhua” – demons who take on the human form.

“Khakhuas” are said to disguise themselves as friends or family members in an attempt to gain the trust of the tribe, so they can later kill them.

It is a so-called Korowai tradition to perform cannibalistic rituals on anyone believed to be a “Khakua” so to protect the rest of the members.

Some researchers believe that clans in the tribe have created the myth of cannibalism to promote interest and tourism.

They are thought to have around 3,000 members.

The Sentinelese tribe

(Image: Internet Unknown)

This tribe lives on North Sentinel Island and has lost no contact with the outside world.

They speak their own language and live without modern technology.

In 2017, they fired arrows at a passing camera crew that were trying to film them.

One of the projectiles injured a member of crew after their boat got too close to the shore.

In November 2018, an American missionary was killed by the tribe after trying to convert them to Christianity.

(Image: Times Now)

John Allen Chau was said to have been killed with arrows when he landed on North Sentinel on November 17.

Indian authorities tried to receive his body but their police boat ended up in a stand-off with tradesmen.

Survival International's Director Stephen Corry said at the time: "The risk of a deadly epidemic of flu, measles or other outside disease is very real, and increases with every contact.

"Such efforts in similar cases in the past have ended with the Sentinelese attempting to defend their island by force.

"Mr Chau's body should be left alone, as should the Sentinelese."