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Alone at The Top of The World… or Accompanied by Someone No One Sees? The Fascinating Third Man Syndrome That Appeared in Ernest Shackleton’s Antarctic Expedition, Intrigued Climbers on Everest and Aconcagua, and Continues to Be Investigated by Scientists Seeking to Understand Why Explorers in Extreme Danger Sense a Mysterious Presence Walking Beside Them

Written by Caio Aviz
Published on 11/03/2026 at 11:02
Alpinistas avançam por montanha coberta de neve em condições extremas, ilustrando o fenômeno psicológico da síndrome do terceiro homem em expedições de alta altitude.
Escaladores enfrentam frio intenso e altitude extrema durante travessia em montanha nevada, cenário associado aos relatos da síndrome do terceiro homem em expedições históricas.
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Historical Reports Show That Explorers in Extreme Situations Often Sense the Presence of Someone Next to Them, Even When They Are Completely Alone

In various extreme expeditions, mountaineers and explorers report a curious and persistent sensation: the impression that someone is walking beside them.

This psychological phenomenon became known as “the Third Man syndrome”, a term associated with historical accounts of survival in hostile environments.

Among the most famous cases is that of the Imperial Trans-Antarctic Expedition, which began in August 1914, led by British explorer Ernest Shackleton.

The mission’s goal was ambitious: to cross the Antarctica from the Weddell Sea to Ross Island, on one of the most challenging journeys in polar exploration.

However, the extreme conditions of the South Pole completely changed the expedition’s fate.

The ship Endurance became trapped in Antarctic ice, and Shackleton had to reorganize his survival strategy in the face of extreme cold and supply shortages.

Curious Phenomenon Emerges During Survival Journey

During an exhausting trek across South Georgia Island, Shackleton was accompanied by Frank Worsley and Tom Crean.

The group advanced for about 36 consecutive hours, facing mountains, glaciers, and extremely low temperatures.

At the same time, the three explorers carried the responsibility of seeking help for the remaining crew members who had stayed behind.

During this crossing, Shackleton described an intriguing sensation.

According to his account, at several points it felt like there was a fourth person walking alongside the group, even though only three men were present.

The experience was later interpreted as a classic example of the so-called Third Man syndrome.

The Phenomenon Gained Ground in Literature and Culture

Years later, the phenomenon caught attention outside the realm of expeditions.

In 1922, British poet T.S. Eliot incorporated the idea in his famous poem “The Waste Land”.

In the frequently quoted passage, Eliot asks:

“Who is the third that walks always beside you?”

From this literary reference, the term “the third man” became widely used to describe the sensation of an invisible companion in extreme situations.

Similar Reports Have Been Registered By Other Mountaineers

The phenomenon was not limited to Shackleton’s account.

In 1933, British explorer Frank Smythe described a similar experience during a climbing attempt on Mount Everest.

During his solitary ascent, Smythe reported clearly feeling the presence of a companion.

The sensation was so intense that, at one point, he took a piece of Kendal Mint Cake from his pocket.

Then, he split the candy in half, believing he was offering a part to the invisible companion.

However, there was no one there.

Decades later, new similar experiences continued to be recorded.

In 1986, Spanish mountaineer Fernando Garrido spent more than two months on the isolated summit of Aconcagua, at almost 7,000 meters above sea level.

During this period, he frequently reported the sensation that someone was outside the tent.

In testimonies later quoted by the newspaper El Confidencial, Garrido described vivid episodes involving the presence of his own brother.

Scientific Studies Try to Explain the Phenomenon

Over the years, various researchers have tried to understand the origin of this experience.

In 2008, writer John Geiger published the book “The Third Man Factor: Surviving the Impossible”, after five years investigating similar reports.

In an interview with journalist Guy Raz of NPR, Geiger explained that some people interpret the phenomenon in a spiritual way.

However, according to him, the syndrome can be explained by scientific processes related to brain functioning.

Among the hypotheses are biochemical reactions triggered by extreme stress or temporary failures in brain activity.

Additionally, researchers like Ben Alderson-Day and David Smailes analyzed the phenomenon in studies published in 2015.

They observed that intense sensations of presence can also occur after bereavement, during sleep paralysis, or in neurological disorders, such as Parkinson’s disease or brain injuries.

These studies indicate that understanding the phenomenon could reveal much about how the brain reacts to danger, physical stress, and mental exhaustion.

As explorers continue to face glaciers, snowstorms, and extreme altitude, scientists continue to investigate an equally complex challenge.

After all, to what extent can the human mind create companionship when survival depends on it?

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Caio Aviz

Escrevo sobre o mercado offshore, petróleo e gás, vagas de emprego, energias renováveis, mineração, economia, inovação e curiosidades, tecnologia, geopolítica, governo, entre outros temas. Buscando sempre atualizações diárias e assuntos relevantes, exponho um conteúdo rico, considerável e significativo. Para sugestões de pauta e feedbacks, faça contato no e-mail: avizzcaio12@gmail.com.

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