unexplorable

the depths of the marianas trench remain largely unexplorable.

due to extreme weather, the mountain peak was rendered unexplorable.

they considered the interior of the ancient temple unexplorable and dangerous.

the vastness of space means many regions remain permanently unexplorable.

the labyrinthine cave system was deemed practically unexplorable.

after the earthquake, the mine was declared unexplorable and sealed.

the dense jungle presented an unexplorable barrier to their progress.

scientists believe some parts of the ocean floor are essentially unexplorable.

the wreckage was in such a state, it was considered unexplorable.

the area consumed by the wildfire was quickly rendered unexplorable.

their mission to chart the region ended as the terrain proved unexplorable.