Archaeological Human Remains Detection

We partner with detection dogs to locate odor associated with buried and aged human remains in archaeological and cultural heritage contexts.

Archaeological detection differs from forensic and search-and-rescue work. Rather than locating recent remains, dogs work with older, lower-concentration, and more diffuse odor signatures associated with historic and pre-contact burials. Handlers in these separate fields also have different sets of data to work with, and different regulations and best practices to follow both in fieldwork and in post-fieldwork reporting.

Human decomposition produces a complex mixture of volatile organic compounds (VOCs) that varies throughout the decomposition process. Dogs respond to specific combinations of these compounds, which produce a signature specific to the human decomposition window for which they are trained.
In archaeological settings, these signatures may persist in soil through decomposition byproducts and environmental processes, even long after visible remains are no longer present.

Our handler teams have experience locating remains across a range of contexts, including surface deposits and cremations, and adjust search strategy based on site-specific conditions rather than a single fixed approach.

After initial training on target odor, dogs are exposed to historic and prehistoric odor signatures in situ through controlled training sessions conducted in collaboration with tribal partners, cemetery managers, and land stewards. These training sessions provide vital exposure to the lower-concentration and environmentally altered odor conditions typical of archaeological burial contexts.

Odor does not stay in one place. It moves through soil and across the surface based on conditions such as:

Detection reflects where odor is available, not necessarily an exact burial location.

Availability alone isn't enough. A dog's trained response requires not just the presence of odor, but a sufficient concentration of it for the dog to commit to a response. This is why a canine response marks the area of strongest available odor concentration, which may be offset from, rather than directly above, the original burial location.

Odor composition and movement are genuinely complex, and researchers are still working to fully understand how decomposition odor behaves across different soils, climates, and time scales. We stay current with, and contribute to, this research as it develops and apply it conservatively, treating a canine response as strong, meaningful evidence within a still-evolving science.

Detection results are interpreted based on:

Handler experience is critical in distinguishing meaningful responses from background scent or environmental noise, especially in the archaeological context where the target odor is more complex in it's concentration and dispersal patterns.

Every dog is different, and every handler is different. Our teams build an individual partnership with each dog rather than applying one formula to all of them through learning how that specific dog communicates, what conditions affect their performance, and how to read their particular behavioral patterns.

Handlers contribute more than dog-handling skill. In the field, a handler may notice surface indicators such as a depression in the ground, a subtle pattern like an overgrown ring of stones, or a vegetation anomaly that could suggest a potential burial location. These observations are recorded as part of our process and they inform where and how a search is conducted but are never used to direct or cue a dog toward a TFR in a specific spot. Our handlers remain conscientious of handler influence, recognizing and avoiding it, and allow their dog to independently discern and commit to the strongest concentration of available odor on its own. This distinction matters because odor is not always available and concentrated directly above a burial, and because a response has to reflect sufficient odor, not the handler's expectation of where it should be. An experienced handler's restraint is as central to a reliable survey as the dog's nose.

Detection dogs identify the presence of odor associated with human remains, a science-backed capability we've distilled into these dogs' training to recognize decades- and centuries-old decomposition signatures. 

Because odor moves through soil and across the surface based on conditions like soil type, moisture, and vegetation (see Odor Movement, above), a canine response marks where odor is available and concentrated, not a confirmed, exact burial location. For that same reason, detection alone does not confirm the presence of human remains, determine age or cultural affiliation, or define exact burial boundaries. This is what makes canine detection a responsible, science-informed first step, not a substitute for professional archaeological evaluation.

Check out our extensive annotated bibliography of detection dog literature