I developed robots for inspecting hazardous and access-constrained underground environments. The MOSAIC camera is a borehole-deployed inspection robot that generates 360 degree panoramas. MOSAIC captures long-range photography in darkness using active illumination and HDR imaging. Ferret was an underground void inspection robot that was capable of deploying through a 3” drill core into unlined boreholes. It produced 3D models of voids with a fiber-optic LIDAR.