Map card without internet connection. offline maps?

Hello! Very often I use HA without internet connection to control my irrigation system (only lan/wifi connection). HA is installed on my tractor and i have a gps with two sensors (latitude and longitude) to display the tractor position on a map card. Unfortunately without internet connection the map card doesn’t work. Does anyone know if it is possible to use offline maps? Maybe downloaded previously on the rpi4???

Thanks a lot.

Someone could help me??? thanks a lot.