The ultimate underground detection technology – A reliable solution for detection of underground intrusion or escape scenarios, including digging under the fence, approaching vehicles, heavy machinery at work, as well as any damage, cut or short in the sensor line or cabling. The TERRASENS system is currently in use in variable applications ranging from border and critical infrastructure security to customized adaptive seismic systems for vehicle and ammunition depot protection. The TERRASENS uses proprietary seismic geoponic sensors buried underground along the fence perimeter, connected to local interface units deployed serially along the physical barrier.