impassable

impassable roads; impassable problems.

The mud made the roads impassable.

the narrow channels are impassable to ocean-going ships.

There was an impassable barrier between the white race and the one which they had reduced to slavery.

The road was impassable due to heavy snow.

The river is impassable at this time of year.

The mountain pass was deemed impassable by the hikers.

The dense fog made the forest impassable.

The area was declared impassable after the earthquake.

The trail became impassable after the landslide.

The swamp was completely impassable.

The old bridge was considered impassable and unsafe.

The dense jungle was nearly impassable.

The storm had made the roads impassable.