A green lane is an unsurfaced road (at least in the United Kingdom). Some may be open to vehicles, they would probably only be passable in a 4x4 vehicle (SUV), others are designated a bridleway[?].
... Apache Indian Reservation[?]
San Carlos Apache Indian Reservation[?]
Fort McDowell Mohave-Apache Indian Reservation[?]
Salt River Pima-Maricopa Indian ...