Sri Lanka Graphite Exploration: UAV LiDAR Terrain Mapping

In 2024, Baxter UAV Solutions carried out UAV LiDAR terrain mapping in Sri Lanka to support graphite exploration. The work focused on jungle-covered terrain and surface evidence of historic mining, including adits and pits.

The mapping challenge

Dense vegetation can make it difficult to understand terrain from aerial photographs alone. Exploration teams need a clearer view of slopes, surface features and possible historic workings before deciding where to investigate on the ground.

This project used LiDAR-derived terrain data to help reveal the shape of the land beneath vegetation. Ground visibility depends on the vegetation, flight conditions and usable laser returns collected at each location.

How UAV LiDAR supported the project

A drone-mounted LiDAR sensor records three-dimensional points from the landscape. Processing these returns produces a point cloud, from which terrain models can be developed. These models provide a way to examine the land surface and look for features that may warrant field investigation.

For the Sri Lanka project, the terrain mapping supported the search for surface signs of previous mining activity. The field image and terrain model shown here document the project and illustrate the type of information used in that review.

What terrain data can tell an exploration team

A terrain model can help a team examine access routes, slopes, pits, entrances and other surface changes. It can provide context for planning ground checks and comparing candidate areas with other geological information.

LiDAR maps the surface. It does not directly locate underground graphite veins or establish a mineral resource. Interpreting a terrain feature as a historic working requires supporting evidence and field verification.

Applying the approach to mining projects in Canada

The same type of terrain information can support mining exploration, site planning and monitoring in Ontario and across Canada. Each project needs a clear scope: the mapping area, site access, intended use of the data, required outputs and any accuracy or coordinate-system requirements.

Baxter UAV Solutions provides UAV LiDAR mapping and 3D terrain data for mining, surveying, engineering and development teams. Discuss the deliverables and software compatibility your team needs before data collection.

Discuss your mapping project

Have a wooded exploration site or a terrain mapping requirement? Request a quote from Baxter UAV Solutions with your site location, approximate area, intended outputs and preferred timeline.

Explore our mining terrain mapping services in Ontario and Canada.