pathless

The trucked veered off the dirt road and into pathless wilderness.

George was wrong yesterday in the clearing: Those were not the pathless woods; these are.

His route was pathless, boggy and extremely difficult.

Mountaineering groups said the dotted line crossed "potentially fatal" steep, rocky and pathless terrain, while a suggested walking route for a different mountain, An Teallach, would lead people over a cliff.

"The terrain up there was pretty terrible. It was the worst stuff, rolling pathless bogs," he said.