untravellable

adjective

a) Unsuitable for or hostile to travel; incapable of being journeyed over or upon.

By encreasing the hollowness of a wide carriage road, much beyond the utility of form, the margins might no doubt be brought into a travellable state; whereas, of a flat road, in a wet season, every part, from side to side becomes equally untravellable.

b) Unable to travel.

Greece however is in a very untravellable state just now.

Syn: impassable, untraversable