(travel) a trip by land between the UK and the Indian Sub-continent or Australia, or between the UK and South Africa.

(transitive, Australia) to transport (especially sheep or other farm animals) over land

(intransitive, Australia) to travel across land

(intransitive) to go on a recreational expedition to a remote destination, often with the aid of an off-road vehicle

by or across land, especially of travel

Over, across, or by land.