I wonder if you could just create a map of the cellular antennas along the metro/subway tunnels. Maybe I misunderstand how connectivity is delivered in undergro

I wonder if you could just create a map of the cellular antennas along the metro/subway tunnels. Maybe I misunderstand how connectivity is delivered in underground systems it may pretend to be a "single cohesive base station" from a phones perspective but if there are thousands of antennas throughout the system and the phone switches from one to the next regularly you can decently estimate the location.