Warming Permafrost, Landslides, and War Damage: How Archaeologists Are Using New Tech to Save Endangered Heritage
On a small island off northern Labrador, the ground that once acted like a natural deep-freeze is beginning to give way. South Aulatsivik Island, part of Canada’s Nain archipelago, has warmed over recent decades, and the thawing of permafrost is putting archaeological sites at risk — including South Aulatsivik 6, where traces of Inuit houses and objects from daily life have long been preserved by the cold.
A new study points to a way forward: move faster, record more, and do it with tools that can see beneath the surface without disturbing it.
In research published in the journal Archaeometry, Rachel Labrie of Université Laval and colleagues used ground-penetrating technology at South Aulatsivik 6 not only to map buried remains, but to evaluate which parts of the site are most exposed to damage as the frozen layer thaws. The approach is designed to help Arctic archaeologists monitor change over time and make difficult decisions about where to focus limited excavation resources.
The stakes extend far beyond one island. Across Arctic and sub-Arctic regions, permafrost thaw is destabilizing landscapes that have protected organic materials and fragile structures for centuries. As conditions shift, archaeologists are increasingly turning to non-invasive geophysical methods and remote sensing to locate sites, document them quickly, and track deterioration.
That same logic is driving a parallel push to create high-resolution digital records — sometimes described as “digital twins” — that can preserve a monument’s form and surface detail even if the physical site is later damaged.
In Nepal’s Dolpo region in the Himalayas, for instance, a network of little-known Buddhist temples faces overlapping threats: landslides, earthquakes, heavier rainfall, and chronic underfunding for maintenance. According to research published in the journal Heritage, Carmen Auer of Graz University of Technology and colleagues are using 3D technology to produce detailed digital models of these remote sites. Their documentation includes inscriptions, sculpture, paintings, and architectural plans — information that can support conservation work while also safeguarding a record of a sacred landscape that is difficult to access and costly to maintain.
Some of the most ambitious experiments borrow from particle physics. Muons — particles generated when cosmic rays strike the atmosphere — constantly rain down on Earth and can pass through dense materials. By placing receptors near a structure, researchers can measure how muons travel through it and generate an image of its interior, effectively producing an X-ray-like view.
Researchers led by Edmundo García Solís of Chicago State University plan to install two muon receptors inside the pyramid of El Castillo at Chichén Itzá in Mexico. The goal is to reveal hidden features of the pre-Hispanic structure, but the conservation implications are equally practical: muon imaging can help establish a baseline record of the pyramid’s current condition and potentially flag anomalies in density or signs of instability in the ground below.
Yet the article’s broader message is not that technology can replace on-the-ground expertise. It can’t — and sometimes it misses what matters most.
A study published in Archaeological Prospection, led by Amal Al Kassem of the University of Cologne, tested how well satellite imagery captures damage at heritage sites in conflict zones. The team visited 28 sites in Daraa, Syria, that had previously been monitored remotely during the war in Syria. Their finding was stark: only 24% of the actual damage was visible in satellite images. Site visits were necessary to understand the true scale of destruction.
The conclusion emerging across these case studies is pragmatic: protecting heritage now requires a layered toolkit. Ground-penetrating surveys, remote sensing, 3D scanning and photogrammetry, experimental methods like muon tomography, and direct fieldwork each reveal different kinds of information — and each has blind spots.
The obstacle, as ever, is capacity. These approaches demand time, trained staff, and funding, all of which are in short supply even as climate change, extreme weather, and armed conflict increase the pace of loss.
The argument gaining urgency in 2026 is that cultural heritage cannot remain an afterthought in climate policy. As permafrost thaws, rainfall patterns intensify, and disasters become more frequent, the question is no longer whether sites will be affected, but whether the world will invest in documenting and stabilizing them before the record of human history is permanently altered.
