And so they came to the swart arboreal precipice of the unpassable forest.
It was on a saddle upon this dragon's back that Alderic afterwards sailed above the unpassable forest, even above the tops of those measureless trees, children of wonder.
The Road from Oppenheim is unpassable for near two Leagues, because 'tis commonly overflown by that River; but afterwards the Way is perfectly good to Frankfort.
The west side, which borders on Cumberland, is indeed bounded by a chain of almost unpassable Mountains, which in the language of the country are called Fells.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "unpassable" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: impenetrable; impermeable; impervious
