See what’s beneath the surface. Without touching it.
Ground penetrating radar (GPR) is a non-invasive geophysical survey technology that maps subsurface features, deposits and anomalies without disturbing the ground. By transmitting electromagnetic pulses into the soil and recording the reflections returned by subsurface interfaces — changes in soil composition, buried features, archaeological deposits, voids and structures — GPR produces detailed profiles of what lies beneath the surface at a resolution that no amount of visual inspection can match. For heritage investigation, it is an invaluable tool for identifying where archaeological material may be present before any decision is made about excavation.
Trace Archaeology deploys ground penetrating radar across a wide range of heritage investigation contexts in WA and beyond. For historic heritage projects, GPR is used to investigate the potential for buried structural remains, artefact deposits, privies, wells and other features associated with historic occupation on development sites in established urban areas, regional towns and rural properties. For Aboriginal heritage projects, GPR assists in characterising subsurface conditions in areas of known or suspected archaeological sensitivity — helping to determine where deposits are likely to occur and informing the design of targeted excavation programmes.
GPR is particularly valuable in situations where excavation would be disruptive, expensive or culturally sensitive — allowing a thorough subsurface investigation to be conducted without breaking ground. It is also used alongside traditional archaeological survey and excavation methods to guide field strategies, prioritise investigation areas and reduce the risk of disturbing significant deposits inadvertently.
Our GPR surveys are conducted by trained operators using current-generation equipment, producing data that is processed and interpreted by experienced heritage professionals. We integrate GPR results with surface survey data, historical records and archival research to build a comprehensive picture of the subsurface heritage landscape of each site. Survey results are presented in clear, well-illustrated reports that explain what was found, where it is located and what it means for the project.
GPR is one of several non-invasive investigation tools available to Trace Archaeology — alongside drone photogrammetry, GIS mapping and archival research — as part of our commitment to thorough, evidence-based heritage assessment that minimises unnecessary disturbance to sensitive sites.
Trace Archaeology is a division of Trace Enterprises — Perth's only fully integrated heritage, environmental and planning consultancy.
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Whatever your heritage or environmental project needs, Trace Archaeology and Trace Ecology is ready to help. Talk to our team today — no obligation.