Wiktionary
untravellable
a. 1 (context of a political region, geographical terrain, road, etc. English) unsuitable for or hostile to travel; incapable of being journeyed over or upon. 2 Unable to travel. alt. 1 (context of a political region, geographical terrain, road, etc. English) unsuitable for or hostile to travel; incapable of being journeyed over or upon. 2 Unable to travel.