1. A geographic area that has not been thoroughly investigated, mapped, or visited by humans
Adventurers set out to discover unexplored land in the Amazon rainforest.
Aventureiros partiram para descobrir terra inexplorada na floresta amazônica.
2. Territory that remains unknown or undeveloped; uncharted region
The expedition aimed to map unexplored land in the Antarctic continent.
A expedição tinha como objetivo mapear terra inexplorada no continente antártico.