unexplored

prehistoric finds made in an unexplored cave

Very little forest is left unexplored nowadays.

the research focuses on an unexplored theme in European history.

Every day his science is penetrating into the region formerly marked in his map as unexplored or inexplorable.

No trope of stagecraft went unexplored this week as the United States jockeyed for advantage in a high-level economic dialogue with China.

venture into unexplored waters

unexplored depths of the ocean