A bronze signet ring depicting the Lighthouse of Alexandria, a wonder of the ancient world, has been discovered underwater in the Mediterranean off Alexandria, Egypt.

A joint team from the European Institute for Underwater Archaeology (IEASM) and the Egyptian Ministry of Tourism and Antiquities found the artifact in the remains of a palace on the now-submerged island of Antirhodos, marking the first time a signet ring featuring the image of the lighthouse has been found, the IEASM team said in a statement.

The image on the ring is similar to depictions of the lighthouse that have been previously found on coins dating to the second century, representatives of IEASM said.

"The discovery of the ring-signet is even more important as it has been excavated in the legendary palace of the Island of Antirhodos, that once was a centre of power," Franck Goddio, president of IEASM, said in the emailed statement.

The palace was used by Egyptian pharaohs who reigned during the Ptolemaic period (304 to 30 B.C.), a dynasty of rulers descended from one of Alexander the Great's generals. The lighthouse was built on the island of Pharos around 280 B.C. and stood more than 328 feet (100 meters) tall. Some ancient writers, such as Pliny the Elder, considered it among the wonders of the world, and it continued to be used into the Middle Ages, until earthquakes and erosion resulted in its destruction and disappearance beneath the sea.

While the lighthouse was modified over time, it would have had a statue, possibly of Zeus, at the top holding an oil lamp that helped guide mariners.

Whoever was wearing a signet ring could have used it to make an impression on soft materials, such as clay and wax, to create a seal. The discovery of the ring in the remains of the palace at Antirhodos suggests that the palace was used for administrative functions related to the lighthouse, representatives of IEASM said in the statement.

Even though the ring's engraving is somewhat worn, it likely depicts the lighthouse, said Doris Behrens-Abouseif, a professor emeritus of history of art and archaeology at the University of London who has written about the lighthouse but was not part of the research team.

There are "thousands of coins from Alexandria showing a similar depiction of the lighthouse," she told Live Science in an email. Those coins date to the Ptolemaic or Roman (29 B.C. to A.D. 395) periods, she noted.

Behrens-Abouseif added that she wasn't familiar enough with rings from Alexandria to comment on whether this is the only ring that contains this image.

Other scholars told Live Science that they, too, believe that this ring depicts the lighthouse, with two scholars noting that it may feature smoke coming from a lamp at top.

The "most interesting thing about the new signet ring engraved gem is an asymmetrical feature at its peak," which "may depict a plume of smoke from the oil lamp in the hand of the crowning statue," Andrew Chugg, an independent researcher who wrote the book "The Pharos Lighthouse in Alexandria: Second Sun and Seventh Wonder of Antiquity" (Routledge, 2024), said in an email.

Margaret Miles, a professor emeritus of art history and classics at the University of California, Irvine, also noticed the possible plume of smoke. Miles noted in an email that this "ring could have been used as a signet ring by a merchant from Alexandria who used the profile of the [lighthouse] to signal his location in Alexandria. The lighthouse was famous, so it became a symbol of the city."

Research off the coast of Alexandria over the past few years, including the discovery of 22 massive blocks, has revealed more information about the lighthouse, including how exactly it looked, which is helping researchers who are trying to digitally reconstruct it.

Are you a fan of mummies and hieroglyphs? Find out with our ancient Egypt quiz!

Archaeologists have unearthed evidence that men, women and children were subjected to violence within their communities in ancient Scandinavia — and that these victims were buried in unusual places, such as pits or wells or under a family's house or yard.

During the Scandinavian Iron Age and Viking Age (from roughly 500 B.C. to A.D. 1050), violent encounters between individuals and communities steadily increased, resulting in archaeological evidence of elite warrior burials and mass graves from battles.

To better understand the context of violence in the Iron and Viking ages, researchers analyzed 192 human bones from people buried in domestic areas at settlements in what are now Denmark, Norway and Sweden.

"The fact is that not all bodies ended up in monumental burial mounds in the Iron and Viking Ages, or even in more modest urnfields and cemeteries," the researchers wrote in a study published Sept. 28 in the Journal of Archaeological Method and Theory. Rather, some bodies — or pieces of bodies — were placed in postholes, pits, floors, wells, houses, yards and feasting halls.

The archaeologists discovered that at least 12 of the individuals had sustained a violent injury around the time of death. Half of those cases involved head trauma, while four people suffered multiple injuries. Most of the victims of violence were adult males, but there were two females and a child as well.

In one Iron Age house in Denmark, built sometime between 500 and 1 B.C., archaeologists discovered a frontal bone from the skull of a child who died between the ages of 2 and 4 years old.

"Our DNA analyses show that it is a small boy who has been cut with a sword," study first author Marianne Hem Eriksen, an archaeologist at the National Museum of Denmark, said in a translated statement. "The child's skull was placed on the floor of a house where people continued to live. This means that someone has walked over a child's skull day after day."

Radiocarbon dating revealed that the child's skull is significantly older than the house itself, by as many as two centuries, suggesting the bone may have been kept for some time before being placed in the house floor, according to the study.

At a Viking Age site dated to around 750 to 1050, archaeologists found a young woman's skull in a well near a cluster of four small houses. "The woman's skull bore traces of blows and was buried in a well," Eriksen said. She may have been cut or slashed with a sword or ax and, like the child, her bones may have been kept for a significant amount of time before being buried in the well. "These glimpses of lives lived from the past show how fascinatingly different people must have thought about life and death," Eriksen said.

And at the Viking Age site of Gammel Lejre, a royal feasting hall that many experts consider to be the inspiration for the epic Old English poem "Beowulf," archaeologists found the burial of a man whose skeleton bore numerous blunt force injuries, several of which had healed, and which attested to a difficult and likely painful life. His skeleton was discovered directly south of the feasting hall.

The study of bones in domestic areas "opens up a completely new understanding of Iron Age society, of the occurrence of violence and of the handling of the dead," Eriksen said. "The results show a much greater complexity in the everyday life and world of imagination of the time than we often attribute to Iron Age people."

But it is unclear exactly why these particular people were the victims of violence and why they were buried in such unusual ways. One possible scenario, the researchers wrote in the study, is that these were victims of violent domestic encounters rather than warfare. Their deaths may also have been the result of socially acceptable corporal punishment or some form of aggression within the community.

Given the increase in social inequality and rise in violence in the Iron and Viking ages, the researchers suspect that precarious community members may have been targeted.

"Not all lives were equally grieved and commemorated in the Iron and Viking Ages of Scandinavia," the researchers wrote. "We may question whether some lives were already considered disposable."

See how much you know about ancient norsemen with our Viking quiz!

The ancient Egyptians practiced human sacrifice around 5,000 years ago, a period shortly after the country was first unified, a new study finds.

In the new study, Roselyn Campbell, an anthropology researcher at Purdue University, re-examined 46 skulls from individuals who were buried near royal tombs that belonged to King Djer, King Djet and Meretneith (a woman who likely ruled Egypt at times), and were built near the ancient sacred city of Abydos. All three rulers lived during the first dynasty, a period that started around 5,000 years ago when Upper Egypt and Lower Egypt were unified into one kingdom. The sacrificed retainers were buried next to the tomb of the king they had served.

Researchers first excavated the royal burial site in the early 20th century. At the time, the excavator, Flinders Petrie, believed that the hundreds of other burials found near the royal tombs contained nonroyals, such as retainers and other people who served the king. Moreover, it appeared that these nonroyals had been sacrificed after the king they had served died, in the belief that they could serve the king in the afterlife.

However, Petrie was unable to identify evidence of fatal skeletal trauma, and his idea that they were sacrificed has been debated ever since. Petrie reburied most of the human remains, but 46 skulls were retained and preserved in the Duckworth Collections at the University of Cambridge.

In the new study, published Monday (Oct. 5) in the journal Frontiers in Environmental Archaeology, Campbell re-examined these 46 skulls using modern forensic techniques and information about the marks that different types of trauma leaves on human skeletons. Campbell found that 18 of the skulls have signs of trauma that were likely fatal — indicating that these individuals were likely sacrificed, according to a statement from the journal. Specifically, Campbell found that many of the skulls had linear fractures, which Petrie had mistaken for damage that occurred after burial.

Linear fractures "occur when the cranium strikes or is struck by a relatively large object with low overall force; because of the cranium's globular shape, the impact of the blow disperses across the cranial vault," Campbell wrote in the study. "While linear fractures are not always immediately lethal, they often cause intracranial lesions and/or hemorrhage, which can quickly cause loss of consciousness and death if surgery [to relieve pressure] is not performed."

Campbell told Live Science in an email that it's difficult to identify the weapon or object that was used. "Based on comparative forensic and archaeological studies, the most likely implement would have been flat and relatively light, probably made out of something like wood rather than stone," she said.

The practice of human sacrifice seems to have ended in the second dynasty of Egypt. Evidence for human sacrifice is limited and seems to be confined mainly to the first dynasty. Petrie theorized that they were retainers to the king based on the fact that some were buried with gravestones that had titles such as seal-bearer which suggested that they served the king.

"As far as we can tell, this particular type of retainer sacrifice seems to have ended with the close of the First Dynasty, which means it [lasted] around two centuries or possibly less," Campbell said.

Jacobus van Dijk, an Egyptologist at Groningen University in the Netherlands who was not involved with the study, welcomed the new research. The "existence of retainer sacrifice in early Egypt has always been controversial and Dr Campbell's research adds an important argument in support of scholars who, like myself, believe this custom was practised in Egypt in the early dynastic period," he told Live Science in an email.

He noted he was surprised at the method used for human sacrifice, because depictions of ritual killing on wooden labels "seems to indicate that the victim was kneeling with his hands tied behind his back being stabbed in the chest with a knife."

Are you a fan of mummies and hieroglyphs? Find out with our ancient Egypt quiz!

Archaeologists have discovered a temple dedicated to the Roman war god Mars in the wooded foothills of the Taunus mountains in Germany. The temple was part of a military settlement that was built in the third century to defend the border of the Roman Empire against Germanic tribes.

The Roman military constructed thousands of forts across Europe, northern Africa and western Asia while expanding the empire, and most of these fortifications had an adjacent settlement, called a "vicus," that was occupied primarily by merchants, families and other civilians.

Since 2024, archaeologists have been excavating the Kapersburg Roman fort and its adjacent vicus in Hesse, roughly 16 miles (26 kilometers) north of Frankfurt, according to a Sept. 25 translated statement from the Hessen State Office for Monument Preservation.

One of the highlights of the current excavation is the unexpected discovery of a Roman temple, Kai Mückenberger, an archaeologist with Hessen Archaeology, a part of the Hesse State Office for Monument Preservation, said in a translated video. "Inside the temple, we found several fragments of a dedicatory inscription," he said. Experts have already translated a portion of the inscription, which mentions that the temple was dedicated to Mars, the Roman god of war.

"We also have the remains of a Mars [statue]," Mückenberger said, as well as a statuette of "a winged figure holding a palm branch and laurel wreath," which is likely the ancient Roman goddess Victoria, a personification of victory in battle.

When archaeologists first excavated the Kapersburg fort near the turn of the 20th century, they discovered that it was built in the early second century, likely under either Emperor Trajan, who ruled from A.D. 98 to 117, or Emperor Hadrian, who reigned from A.D. 117 to 138 and expanded the Roman Empire further into northern England, building Hadrian's Wall. The Kapersburg fort was used by a unit of Roman soldiers and cavalry for about a century and a half, until around A.D. 275.

Although the fort's defensive structures and some of its walls have been visible since antiquity, practically nothing was known about its nearby vicus prior to the excavations that began in 2024, according to Mückenberger.

"The astonishing thing is the exquisite preservation of the archaeological layers that start right beneath the forest floor," Mückenberger said. These layers, which include burnt material, almost never survive in agricultural areas but have been well preserved at the vicus. "This is an incredible learning process and a gain in knowledge for us," Mückenberger added.

During their excavations, the research team discovered far fewer houses than they expected. However, they found much more evidence of craft activities, such as blacksmith pits and ovens for drying wheat and baking bread.

"These are all very technical elements related to local services, indicating that we're in a kind of intermediate area not directly adjacent to the fort itself, but perhaps more like the fort's craft area," Mückenberger said.

The temple and votive statues provide new insight into the Roman world of beliefs on the border of the empire, according to the statement. But when the fort was no longer useful, the Romans leveled the camp and replaced it with residential buildings, the archaeologists discovered.

Mückenberger and his team plan to continue their excavation of the site next year.

From Augustus to Nero, see how much you know about ancient Rome's famous leaders with our Roman emperor quiz!

This colorful ceramic urn depicts a person wearing a jaguar costume and surrounded by human skulls, about to be received into the Maya underworld. The urn once held the bones of an ancestor for their descendants to venerate.

The urn was anonymously gifted to The Walters Art Museum in Baltimore in 2008. According to the museum, the urn is about 17.5 inches (44.5 centimeters) tall and was likely produced in Guatemala by the K'iche' Maya people more than a millennium ago. Originally, the urn probably had an elaborate lid that was tied on with string through the loops near the lip of the vessel, but it is now missing.

The decoration on the urn is striking. A person wearing a jaguar costume splashed with blood — claws and teeth bared — looks out at the viewer from the center of the urn. This individual may be a deceased ruler who is entering the world of the dead, which is symbolized by two pairs of human skulls and the dark figures of two Maya gods of the underworld. Behind the underworld gods are raised spikes representing thorns of the tropical kapok tree (Ceiba pentandra).

The Maya believed that the kapok tree, which was also called the Maya "world tree" or the Yaxche, had roots in the aquatic underworld, so its depiction on this funerary urn may reflect how it is a conduit between realms, according to The Walters Art Museum. Jaguars also held important spiritual meaning to the Maya; they were thought to move fluidly between the three realms — sky, Earth and underworld. Therefore, the depiction of the deceased ruler wearing a jaguar costume to enter the underworld may have suggested that they could also mediate between the world of the living and the Maya gods.

This colorful and symbol-laden urn shows that death was not an ending for the Maya, according to The Walters Art Museum, and that the urn "serves as a graphic reminder of how the dissolution of the body could be a positive change, transforming a beloved ancestor into an honored spirit who would continue to guide the living for eternity."

For more stunning archaeological discoveries, check out our Astonishing Artifacts archives.

Can you put together last week's Astonishing Artifact?