We Help You Preserve the Heritage of Your Cemetery

Cemetery Mapping with GPR

Take the guesswork out of your cemetery management with Sentry Mapping’s Ground Penetrating Radar (GPR) services. Let us help you see what’s underground without digging, improve your records, and preserve your cemetery’s heritage.

Old paper map of a cemetery Digital map of a cemetery

Turn outdated or incomplete paper documents into a streamlined and user-friendly digital record. Don’t have any records? No problem. Our team will survey your cemetery and provide you with a digital “as-built” map.

Welcome to Sentry Mapping

Sentry Mapping is a dedicated cemetery mapping company utilizing GPR services to offer professional subsurface mapping solutions across all 48 Contiguous United States. Our team of experts is equipped with state-of-the-art GPR/GIS technology that can identify each individual grave in cemeteries of any size. We specialize in creating detailed burial plot maps to help you maintain accurate records and plan for the future with precision.

Effective Solutions for Cemetery Management

Our Ground Penetrating Radar (GPR) services accurately identify every burial site to honor and preserve your cemetery’s legacy.

Transform your management approach with our detailed, as-built maps and digital records, ensuring you never lose track of a grave again.

Make your cemetery’s history easy to manage with our clickable, searchable web maps, and ensure your recordkeeping is streamlined and user-friendly for future generations.

Our straightforward, no-annual-fee web mapping solution, provides an affordable and easy way to access and manage your cemetery’s data.

Our precision mapping services makes it easy to plan for future burials and maximize available space while maintaining the respect and dignity of existing sites.

What We Offer

Graveyard with headstones

Cemetery Mapping

Provide the best service to your visitors and maximize your cemetery’s potential real estate by mapping both marked and unmarked burial plots using GPR

Digital map of cemetery plots

Burial Plot Mapping

Our Subsurface mapping solutions use top-of-the-line GPR equipment and come complete with accurate GPS coordinates and burial plot maps for your cemetery.

GPR maping equipment

Grave Locating

GPR works to locate unmarked or lost graves by sending radar signals into the earth to detect disturbed soil and voids in the earth.

What We Do

Sentry Mapping provides professional Ground Penetrating Radar (GPR) mapping services to cemeteries throughout North America. Our expert GPR technicians use state-of-the-art radar systems with high-frequency antennas to carefully and accurately map the subsurface landscape of your space.

Our world-class Ground Penetrating Radar systems send signals into the earth and record the reflections of those signals. These signal reflections show as a hyperbola on the system’s screen and will pinpoint underground anomalies allowing our technicians to mark their exact locations. This process creates a subsurface map of the area while causing no soil disturbance or any other damage to the site.

Ground Penetrating Radar allows you to get an underground view of your desired area. This provides a blanket of protection from costly digging errors and an otherwise inaccessible insight into the layout and features of your project’s subsurface landscape.

Ground penetrating radar equipment on a grassy lawn


Sentry Mapping offers our clients across the U.S. professional geophysical testing with top-of-the-line GPR equipment. Each member of our team of GPR Mapping professionals is highly qualified and expertly trained in the use of these state-of-the-art radar systems.

Cemetery Mapping Process

01. Initial Contact:

Contact us and our team of experts will answer any questions and discuss your specific needs.

02. Proposal Creation:

Our experts review your cemetery via Google Earth, and send a proposal within one business day.

03. Field Work Begins:

We visit your site to start data collection. This may take a day to several weeks depending on the size of your cemetery.

04. Post Processing:

We process the field data and generate digital maps and records. This typically takes about 3 to 12 weeks.

05. Review and Approval:

We review the results with you and collect any feedback, corrections, and final approval.

06. Final Delivery:

You are sent a physical copy of the map, along with a web map link for easy access.


We’re here to help you streamline and simplify your record keeping with high-quality, accurate maps. We use the most modern GPR and GPS technology to provide exact renderings of your cemetery.

Cemetery with headstones, mapping equipment, and a building

Save Time & Money

Save time, save money, and avoid frustration with highly accurate underground maps that can be used to minimize effort and excavation while allowing you to plan your burials with confidence.


Enjoy an up-to-date cemetery roster that was created for you and designed with accurate burial names and locations that will direct your cemetery’s visitors to their loved one’s resting place with ease.


Appreciate an accurate Burial Plot Map that identifies what burial spaces are available for purchase and creates a burial system for future burials.


Detect underground anomalies and disturbances including unmarked graves, USTs such as septic systems, and utility lines which aid in avoiding costly digging mistakes.

A 150+ year-old historic cemetery faced a significant challenge: it had no records or maps of its burial sites. This lack of documentation left the caretakers unsure about the availability of space for new burials, raising concerns about the preservation of the cemetery’s heritage and the respect due to those interred.

Sentry Mapping Services stepped in with a comprehensive approach to solve the cemetery’s challenges. Utilizing advanced Ground Penetrating Radar (GPR) technology, the team meticulously scanned the entire area to locate unmarked graves. This thorough investigation was followed by the creation of a detailed map that not only marked every known burial but also included names, birth and death dates, creating a rich tapestry of the cemetery’s history. To complement this, Sentry Mapping provided a clickable and searchable web map, making navigation and management effortless for the caretakers—all at no additional cost.

Thanks to Sentry Mapping’s expertise, the cemetery now has a clear understanding of its layout and capacity for future burials. This newfound knowledge ensures that every inch of sacred ground is used respectfully and efficiently, honoring the memory of those at rest. Moreover, the digital tools provided have secured the cemetery’s heritage for future generations, making it easier for families and historians to connect with their past. The once uncertain terrain of the cemetery is now a carefully mapped and cherished space, its legacy preserved and its management streamlined.

Sentry Mapping surveyed and mapped three cemeteries in our small community. It was amazing how many unknown graves were found, many dating as far back as the 1800s. The older cemeteries had rocks and pieces of wood for grave markers that had been moved or lost over the years. With the help of Sentry Mapping our community was able to put a permanent marker where each grave was located. We were very pleased with Sentry Mapping. They did a fantastic job and I would recommend them to anyone who needs this service.
– Joseph F.
We hired Sentry Mapping to locate my great-grandfather’s grave which was without a marker for more than 100 years. Due to a lack of cemetery documentation, our new memorial was placed in his guardian family’s plot; however, we could not rest until we were sure we had found his actual resting place. Sentry Mapping located Fred and the cemetery now recognizes his burial in their documents. It is a huge relief to know we got it right! His life needed this celebration, and we needed the peace of closure. Thank you so much, Benton, we truly appreciate all that you did for our family!
– Thomas S.
I couldn’t be happier with my experience working with Sentry Mapping for remapping our cemetery! They made the whole process so painless and easy- Benton was so easy to communicate with and was a HUGE help in cleaning up a giant mess. Thank you so much for your services!
– Stepanie S.

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