Subsurface chart
A subsurface chart was a map or survey depicting geologic data or features below a planet's surface.

In 2267, Captain James T. Kirk requested a complete subsurface chart which detailed all the drifts, galleries, and tunnels of the Janus VI colony's mines in order to help with the investigation into deaths at the hands of the mother Horta. ()

See also
Subsurface scan
Cartography
Mining