Cave Mapper

MAD Redis LAB LLC

About this app

Cave Mapper builds 3D maps of caves and underground spaces — with no GPS required.

Below the surface, satellites disappear. Traditional surveys need dedicated instruments, notebooks, and long post-processing. Cave Mapper turns your Android phone into a field mapper: Visual SLAM plus barometer, magnetometer, and IMU — in real time, fully offline, with no cloud lock-in.

WHY CAVE MAPPER
• No GPS — pose from Visual-Inertial Odometry (ARCore VIO)
• Live point cloud — capture walls and passages as you move
• Barometric depth — practical for vertical shafts and pits
• Magnetic anomaly logging — track compass drift in ferrous rock
• Low-light friendly — tuned for dim cave conditions
• 10–20 min session segments — reduce drift on long routes
• Export — open in CloudCompare, MeshLab, QGIS, or your pipeline
• On-device only — no mandatory internet connection

WHO IT’S FOR
Cavers, rescue teams, geophysicists, mine and underground inspectors, and anyone mapping spaces where GNSS fails.

HOW IT WORKS
1. Start a session underground
2. Move the camera steadily — Cave Mapper builds the point cloud and trajectory
3. Watch depth and magnetic field readings
4. Export

NEXT TO CLASSIC SURVEY WORKFLOWS
Cave Mapper is the fast visual layer: phone-based point clouds and trajectories when you need 3D context on the spot — without deploying a full instrument kit.

NOTES
• Requires a camera and an ARCore-supported device
• Barometric depth needs a pressure sensor
• GPS is optional surface georeferencing only
• A field 3D capture tool — not a certified surveying substitute

Feedback shapes the roadmap — tell us which formats and workflows you need next.

What’s new

Welcome to Cave Mapper — the first public release!

• Map caves and underground spaces without GPS using Visual SLAM (ARCore)
• Capture live point clouds and survey trajectories
• Use barometer depth and magnetometer readings
• Review sessions in 3D history
• Export to PLY, GeoJSON, CSV, LAS, and E57
• Works offline — your data stays on the device

Thank you for trying Cave Mapper. Feedback is welcome!