How Did Ötzi the Iceman Die?

Ötzi the Iceman was shot in the back with an arrow while travelling through the high Alps around 3300 BC. The stone arrowhead is still lodged in his left shoulder, where medical imaging has revealed damage to a major artery. For years, researchers believed he died from blood loss within minutes. Two forensic studies published in 2025 now challenge the claim that he died so quickly.

Hikers found his body in September 1991, about 3,210 metres above sea level in the Ötztal Alps near today’s Italian-Austrian border. Ötzi was approximately 45 or 46 years old when he died. Snow and ice preserved his skin and internal organs along with his clothes and equipment for more than 5,000 years. The preserved tissues let researchers examine injuries and circumstances that a Copper Age skeleton alone could scarcely reveal.

An arrow fired from behind and a deep cut inflicted on his right hand several days earlier show that Ötzi had suffered violence. They cannot tell us who attacked him, why he was attacked, or how long he lived afterward. Ötzi left physical evidence of the injuries, but no testimony about the events that led to them.

The Arrowhead That Revealed a Killing

On 19 September 1991, German hikers Helmut and Erika Simon noticed human remains exposed in the ice near the Tisenjoch pass. Rescuers initially believed the body belonged to a modern mountaineer, and it was removed several days later before its antiquity was recognised. Radiocarbon dating eventually showed that the man had lived during the Copper Age, a period when Alpine valleys supported farming communities and valuable copper implements were used alongside stone tools.

Initial examinations left open whether a fall, exposure or another mountain accident had killed him. Then, in 2001, radiologists detected a stone arrowhead behind the left shoulder. It had gone unnoticed for about ten years. A wound in the overlying skin and damage inside the shoulder confirmed that the point had entered his body rather than simply become mixed with objects around it.

The missile came from behind, passing toward the space beneath his left collarbone. It damaged the shoulder blade and stopped close to major blood vessels and nerves. The arrow wound established that Ötzi had been attacked. The South Tyrol Museum of Archaeology, where the mummy is held, explains the evidence of the attack, although some museum descriptions of how rapidly he died still follow the earlier medical interpretation.

A multislice CT examination in 2005 gave radiologists a closer view of the wound. Computed tomography uses X-rays taken from numerous directions to reconstruct thin sections through the body. Radiologists could study the arrowhead, injured tissue and nearby vessels without damaging the irreplaceable remains in an autopsy.

Why Doctors Initially Concluded That Ötzi Bled to Death

The vessel most closely implicated was the left subclavian artery, which supplies blood toward the arm from a large artery near the heart. In 2007, Patrizia Pernter, Paul Gostner, Eduard Egarter-Vigl and Frank Rühli described damage extending approximately 13 millimetres along its wall. They also identified a small, irregular bulge interpreted as a pseudoaneurysm, which forms when blood passes through a tear in an artery but is held by tissue outside it. Blood had accumulated around the wound in a collection called a haematoma.

The four researchers concluded that the arrow tore the artery and produced fatal haemorrhagic shock. Severe blood loss can reduce pressure and circulation until organs no longer receive enough oxygen. Without a blood transfusion or surgery, bleeding of this kind could kill someone stranded high in the Alps. Their paper, “Radiologic proof for the Iceman’s cause of death”, made death from bleeding seem almost certain and became the basis of the widely repeated account of Ötzi’s last minutes.

Two findings supported the diagnosis: the arrowhead remained in the wound, and the artery was injured. Neither finding could reveal precisely how much blood had left his body or whether bleeding might have slowed before death. Mummification had also contracted the tissues over thousands of years. A measurement on Ötzi today cannot automatically be converted into the same measurement on his living body.

Lividity, the discolouration caused by blood settling in the lower parts of a body after death, complicates the interpretation. Marks on mummified skin are difficult to read, and subsequent researchers have suggested that some of Ötzi’s changes may represent lividity. That possibility makes older interpretations of skin colour less secure.

The 2025 Forensic Reassessment: Did He Survive for Hours?

In May 2025, Chiara Villa, Sara Larsen, Albert Zink and Niels Lynnerup reconsidered the wound using CT scans acquired in 2013. They modelled his shoulder in three dimensions and moved the virtual arm toward a position more plausible for a living person. Ötzi’s actual left arm now rests awkwardly, and dried tissue has changed shape. In the adjusted model, the hole in the skin, injury to the shoulder blade and arterial lesion could be connected by a reasonably straight arrow path.

They also identified a blood collection that earlier examinations had missed. Correcting for estimated shrinkage, they calculated a haematoma of roughly 110 millilitres, far too little on its own to prove lethal haemorrhagic shock. The researchers did not deny that Ötzi might have lost much more blood externally, leaving none of it in the mummy. Their open-access forensic study challenged the claim of immediate death from massive internal bleeding, while leaving haemorrhage a possible cause.

Jochen Weber, Joachim Wahl, Marco Samadelli and Albert Zink published another assessment in November 2025, this time examining the injuries as clinicians might assess a living patient. Their model gave the wound a length of approximately 11 to 13 centimetres in a shoulder restored to living dimensions. Much of the track ran through muscle capable of moving and compressing the passage. They argued that this could have limited bleeding and made several hours of survival medically possible. Their Scientific Reports analysis also considered the strain of altitude, cold and exertion.

Neither 2025 study shows that Ötzi survived for hours. The authors could neither examine the wound while he lived nor recover blood that might have drained onto the mountainside. One study reconstructed the surviving internal blood collection; the other considered the physiological effects of the injury. Both question the certainty of death within minutes, while neither provides a reliable alternative duration.

His survival time also bears on the location of the attack. Someone killed almost immediately would probably fall near the place where he was shot. A wounded man who could still move might travel some distance before collapsing. In that case, neither the mummy’s location nor the positions of its belongings would securely locate the archer.

The Cut on His Right Hand

Ötzi’s right hand had been injured before the arrow attack. A deep cut between his thumb and index finger reached the bone and showed signs of healing over several days. Andreas Nerlich and colleagues described it in The Lancet in 2003. He may have received the cut while raising his hand against a blade, since its position and depth are compatible with defence. The cut cannot identify the person responsible or establish exactly how it happened.

Using his right hand must have been painful, perhaps making a firm grip difficult. Ötzi had a flint dagger and equipment for repairing stone tools, both requiring control of his fingers. The injuries cannot be securely assigned to the same encounter, and nothing establishes that he spent days fleeing pursuers. That story goes further than the condition of his hand allows.

The November 2025 clinical study considered whether he had bandaged the wound. His right hand rests in an unusual posture, which its authors compared with the shape of a hand wrapped around the palm and wrist. Straps, moss and cord were found with the objects from the site, but no surviving material can confidently be assigned to such a dressing. A bandage might explain the posture, but the evidence does not establish that he wore one.

The cut establishes that a sharp object wounded his hand several days before he died. It may indicate an earlier violent encounter, but whether it belonged to the same dispute that ended with the arrow is unresolved.

What His Last Meal Tells Us, and What It Does Not

Researchers initially thought Ötzi had died with an empty stomach because they could not find the organ. It had shifted upward beneath his ribs after death. In 2011, Paul Gostner and colleagues reconsidered the radiological evidence, locating a stomach full of food and identifying three gallstones along with other anatomical features. Their original study, available through the Vatican Museums made it possible to examine the meal itself in later laboratory work.

Frank Maixner and an interdisciplinary team studied those contents in 2018 with microscopy and molecular analysis. A considerable portion consisted of animal fat, together with ibex and red deer material, einkorn wheat and other cereal remains, and traces of bracken fern. Ibex are wild goats adapted to mountain country, while einkorn is an early domesticated wheat. This was energy-rich food, useful on an arduous journey. The findings were published in the Current Biology study on his last meal.

The substantial meal reveals little about whether Ötzi expected an attack. He could have eaten while afraid, hiding or travelling in apparent safety. Digestion also depends on the fat and other contents of the meal, exertion and individual physiology. A full stomach cannot rule out pursuit or establish that he was ambushed moments after eating.

The animal fat and meat challenged older portrayals of Ötzi as largely vegetarian. He consumed plant foods, but this meal clearly contained meat and animal fat. The bracken might have entered the food accidentally or during preparation. Its presence alone does not demonstrate that Ötzi was using the plant medicinally.

From Which Direction Was the Arrow Fired?

We know that the arrow entered the rear of Ötzi’s left shoulder. The archer’s position is less clear. The shoulder blade changes position with arm movement, and the mummy’s tissue has shrunk. Older reconstructions placed the shooter behind Ötzi, perhaps below him. Villa and colleagues found in their 2025 animated reconstruction that adjusting the arm produced a straight, downward-sloping path compatible with a shooter standing higher up.

The reconstruction cannot identify the precise firing position. Ötzi might have been standing upright, bending, turning or moving across irregular terrain. His exact posture has not survived. The direction from behind is secure, but the distance of the shot, angle of the slope, number of attackers and whether he perceived the danger remain unanswered.

The stone point survived inside his body, though the wooden shaft was gone by the time he was found. It could have been pulled out while Ötzi was alive, or broken and separated in another way. Some older accounts claim that the attacker removed it to conceal the weapon or recover valuable material. Nothing recovered from the body proves either intention, or tells us who removed or broke the shaft.

His tools provide evidence of his activities before that final journey. Ursula Wierer and colleagues studied wear, manufacture and raw materials in the flint dagger, scraper, borer, flakes, arrowheads and antler retoucher. Their 2018 PLOS ONE analysis found repeated tool maintenance and fresh retouching on some pieces. The chert came from several sources south of the Alps. Wear on the tools indicates experience maintaining stone implements, while the raw materials point to contacts extending across several areas.

His bow was not ready to shoot, and most of the arrows in his quiver were unfinished. That might have left him poorly equipped to resist an attack. Yet the condition of a bow cannot date a conflict: it could already have been unfinished, while other damage may have developed long after death. Wear and repairs document prolonged tool use; they cannot establish why he entered the mountains on his final journey.

Was He Also Struck on the Head?

Researchers have also investigated possible head trauma. In 2013, researchers examined very small samples of preserved brain tissue and detected proteins and microscopic traces consistent with damaged tissue and blood. Their study, “Paleoproteomic study of the Iceman’s brain tissue”, raised the possibility of a fall, a blow or another injury close to death. It did not establish what caused the changes, still less show that a head injury was fatal.

The November 2025 clinical reassessment questioned that interpretation. Its authors found no decisive evidence of serious traumatic brain injury in the existing CT scans and surface photographs. Apparent changes to the skull might instead reflect normal anatomy or damage after death. They also suggested that facial discolouration could be lividity rather than bruising. A head injury remains possible, although no fatal blow to the skull has been demonstrated.

The body shows injuries older than the final attack as well. Some ribs had fractured and subsequently healed. According to the latest clinical assessment, those healed breaks were unlikely to have produced fatal complications when the arrow struck.

Can His Body Position Show Where He Died?

Ötzi was found lying face-down against a rock, his left arm held unusually. Earlier reconstructions sometimes assumed that this was exactly how he had fallen. Other researchers suggested that the arm was repositioned in an attempt to stop bleeding, or that someone turned the body while withdrawing the arrow. The November 2025 authors read the skin discolouration and chest compression as compatible with death while lying prone.

The recovery and later disturbance of the findspot complicate any interpretation of his posture. The body had already been recovered before a systematic archaeological excavation, and visitors displaced or removed some belongings. Thousands of years of snow, ice and meltwater had acted on the remains as well. The posture visible in 1991 might reflect a mixture of events during life, immediately after death and long afterward.

His final position does not locate the shooting. If the injured man survived for hours, he could have walked away from the point where he was hit. Even if he died at once, later water and snow movement might have shifted the corpse from its first resting place. The angle of the body alone cannot distinguish those scenarios.

His Health and the Difficult Alpine Journey

Ötzi’s skeleton and joints suggest a life that involved repeated physical demands, though they do not identify his occupation. Radiologists recorded joint wear and changes where tendons attach to bone, particularly around his knees. These attachment changes, called enthesopathy, can reflect mechanical strain. They cannot tell us whether he herded animals, hunted, traded, or regularly travelled above the tree line.

The 2011 radiological review also noted gallstones and calcification in his arteries. Gallstones are deposits in the gallbladder and arise for different reasons; they cannot be translated directly into a measurement of dietary cholesterol. Neither these findings nor the condition of his knees establishes a lifetime of eating mostly meat or working in a particular trade. The stomach contents describe one recent meal, not his usual diet.

His belongings do, however, reveal careful preparation for Alpine travel. He wore clothes sewn from animal skins and carried birch-bark containers, a wooden-hafted copper axe, a stone dagger and the implements needed to keep stone edges sharp. The copper axe in particular was valuable. Its presence has led some investigators to doubt that an ordinary robbery motivated the attack, but a thief could have taken a perishable possession or something that has since disappeared.

Cold, altitude and exertion could have compounded the effects of the shoulder wound. Above 3,000 metres, cold, reduced oxygen and strenuous movement can all burden an injured person, particularly one losing blood. The November 2025 clinicians discussed these factors without establishing a specific temperature, calculating how far Ötzi travelled after the shot, or identifying hypothermia as an independently proven cause of death.

Why His Body Survived in Ice

Ötzi’s body preserves evidence rarely found in Copper Age archaeology: cold conditions kept soft tissues and everyday objects that usually decay long before a Copper Age site is excavated. His body was naturally mummified. But researchers increasingly question the idea that he froze immediately and remained entombed in one unchanging glacier for approximately 5,300 years.

Lars Pilø, Thomas Reitmaier, Andrea Fischer, James Barrett and Atle Nesje reassessed the evidence in a study released online in 2022 and published in The Holocene in 2023. They argued that Ötzi and his objects may have moved into the gully after death. During roughly the first 1,500 years, the site might have become exposed periodically; later a relatively stable patch of ice could have preserved the remains instead of a flowing glacier. Their open-access study drew on excavation records, radiocarbon dates, glacial archaeology nearby and evidence of thawing and refreezing.

The reconstruction remains a hypothesis, since the movement of the ice over five millennia was never directly recorded. But it raises a practical problem for the murder story: a broken arrow, damaged garment or displaced object could have changed long after the attack. Such traces cannot simply be assigned to a pursuer or treated as proof of where Ötzi finally collapsed.

The mummy is conserved today in a temperature-controlled chamber at the South Tyrol Museum of Archaeology in Bolzano. Researchers continue to investigate his life and death, while the museum must preserve the fragile evidence from further deterioration.

Who Killed Ötzi, and What Can We Actually Know?

The arrow wound in Ötzi’s back and the older deep cut on his right hand are among the most secure facts of his death. The arrow damaged the left shoulder and an artery and may have contributed directly to killing him. The 2007 diagnosis of fatal blood loss remains important, but the two 2025 reassessments dispute the certainty that he died within minutes. Survival long enough for cold, altitude and exertion to affect him remains possible.

The attacker has never been identified, and no motive can be demonstrated. Suggestions range from revenge and territorial disputes to robbery and conflict between groups. Ötzi’s remaining equipment does not decide among them. The valuable copper axe left beside him complicates the idea that the archer simply took all his possessions, but cannot show what the attacker wanted or what may have disappeared.

More than 5,000 years after the attack, an arrowhead still marks where Ötzi was shot. Mummification, weathering and the circumstances of recovery prevent a precise reconstruction of his final movements. Someone fired from behind. Whether the shot killed him quickly or left him struggling on the mountain for longer is still unresolved.