Unpassed

The whole company kneeled on the shore and kissed the ground for joy, returning God thanks for the great mercy they had experienced during their long voyage through seas hitherto unpassed, and their now happy discovery of an unknown land.

Source: wiktionary

In 1870, Forster, author of the still unpassed bill, wrote that while the parsons were disputing, the children of the poor were "growing into savages."

Source: wiktionary