A major debate over the construction of the mysterious Neolithic Stonehenge site in the UK may finally have been resolved, after new evidence strongly suggests the stones were carried to the site by humans, not by natural processes.
The work, conducted by Curtin University researchers, discounts the likelihood that glaciers transported the blue stones used to construct the famous megalithic site. Archaeologists have long debated Stonehenge’s construction methods, and the recent paper published by the researchers in Communications Earth & Environment brings valuable new information to the discussion.
Explorations at Stonehenge
Uncertainty about how the site’s enigmatic altar stone arrived at Stonehenge has long fueled scholarly debate. In 2024, Curtin University researchers determined that the altar stone at the site had been transported from Scotland. For the new work, the Curtin University team used a form of mineral fingerprinting to provide new scientific evidence for how the transport occurred. To do so, the team explored rivers surrounding southern England’s Salisbury Plain, seeking mineral grains.
Analyzing these grains at Curtin University’s John de Laeter Centre revealed a geological record of the movement of sediment throughout Britain on a scale of millions of years. Especially crucial were zircon crystals, among Earth’s toughest materials, which are preserved for immense periods of time.
“If glaciers had carried rocks all the way from Scotland or Wales to Stonehenge, they would have left a clear mineral signature on the Salisbury Plain,” said lead author Dr Anthony Clarke from the Timescales of Minerals Systems Group within Curtin’s School of Earth and Planetary Sciences. “Those rocks would have eroded over time, releasing tiny grains that we could date to understand their ages and where they came from.
“Humans Moved the Stones”
“We looked at the river sands near Stonehenge for some of those grains the glaciers might have carried and we did not find any,” Dr Clarke added. “That makes the alternative explanation—that humans moved the stones—far more plausible.”
While the work suggests that human ingenuity, not natural processes, moved these immense slabs of rock, exactly how that was accomplished remains a mystery.
“Some people say the stones might have been sailed down from Scotland or Wales, or they might have been transported over land using rolling logs, but really we might never know,” Dr Clarke said. “But what we do know is ice almost certainly didn’t move the stones.”
Ongoing Explorations at Stonehenge
“Stonehenge continues to surprise us,” said co-author Professor Chris Kirkland, also from the Timescales of Mineral Systems Group at Curtin. “By analysing minerals smaller than a grain of sand, we have been able to test theories that have persisted for more than a century.”
Given the site’s great antiquity, it has remained a focus of archaeological inquiry, although many questions about Stonehenge remain. Fortunately, modern technologies—including the geochemical tools used in the recent work—are helping to provide answers to some of these lingering mysteries over time.
“There are so many questions that can be asked about this iconic monument,” Professor Kirkland says. “For example, why was Stonehenge built in the first place?”
Kirkland points out that the site most likely had multiple purposes, which, in addition to its ritual significance as an ancient temple, likely included serving as a calendar, and even a site for feasts and other gatherings. “So asking and then answering these sorts of questions requires different sorts of data sets, and this study adds an important piece to that bigger picture.”
The paper, “Detrital Zircon-apatite Fingerprinting Challenges Glacial Transport of Stonehenge’s Megaliths,” appeared in Communications Earth & Environment on January 21, 2026.
Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org, and follow him on Twitter @mdntwvlf.