We’d like to thank Sergiu Ceausu, Head of the 3D Scanning Department at GISCAD, for sharing the details of this impressive lidar cave mapping project. His insights provide a unique look at how advanced LiDAR technology is being applied to preserve and study one of Romania’s most remarkable natural landmarks.
Precision and Detail: The Growing Importance of 3D Scanning in Romania
The 3D scanning market in Romania has witnessed a remarkable evolution in recent years, transforming from a niche technology to a more accessible and widely adopted solution across various industries. Driven by advancements in technology and a growing recognition of its benefits, the market has experienced significant growth and diversification across multiple industries.
About Bear Cave
The cave was discovered in 1975 during quarrying work in the area. Its name, “Bear Cave,” comes from the numerous fossils of cave bears (Ursus spelaeus) that were found inside. These bears inhabited the cave around 15,000 years ago, using it as a shelter. Over 140 bear skeletons have been discovered, making it a unique paleontological site.
Bear Cave is known for its impressive limestone formations, including stalactites and stalagmites, which create a visually stunning underground environment.
The Purpose of Using 3D Scanning Technology
On March 17, 2025, Bear Cave underwent its first-ever 3D scanning project. This initiative was a collaboration between the University of Oradea’s Faculty of Constructions, Cadastre, and Architecture and GISCAD SRL. The goal of this project was to create a detailed digital database for the long-term monitoring and conservation of this natural landmark. The resulting point cloud will provide valuable data for understanding the cave’s geological and biological changes with high precision and will aid in its preservation.
The entire cave was meticulously captured using the NavVis VLX2, provided by GISCAD SRL. Its advanced SLAM technology allowed the scanner to build a detailed 3D point cloud of the cave environment as it was moved through the space. This technology is crucial in environments where GPS signals are unavailable or unreliable, as the scanner uses its onboard sensors to simultaneously map the surroundings and determine its own position within that map. The operation of the equipment in the cave was carried out by 3D Scanning Specialist Sergiu Ceausu
Technical Details of the Project
Thanks to the dual VLX2 LiDAR sensors, the resulting point cloud contains approximately 400 million data points, each rendered with authentic color information obtained from the four integrated cameras.
The overall length of the measured cave was approximately 600 meters, with georeferencing accuracy at the endpoints maintained within 4 centimeters. This precision was facilitated by the scanning methodology, which incorporated frequent elongated loops and concluded with the entire measurement ending at the starting point.
The total time for the field measurements was around 45 minutes. This clearly shows the productivity level attainable through the use of the right equipment.
The homogeneity of the point cloud was achieved, once again, thanks to the exceptional quality provided by the two integrated LiDAR sensors.
About GISCAD
The company GISCAD SRL was founded in 1996 and is predominantly active in the field of Surveying, 3D Scanning, and Photogrammetry. We provide equipment and software to companies working in related industries, being the exclusive distributors of Trimble Geospatial, NavVis, and Wingtra brands in Romania. Our passion for using new technologies drives us to stay up to date with the latest trends in the market.
For more examples of using lidar to document caves, please read 3D Laser Scanning Historical Caves.
