1. An area of land or territory that has not been investigated, mapped, or developed by humans
The Amazon rainforest contains many unexplored regions where new species are discovered regularly.
A floresta amazônica contém muitas regiões inexploradas onde novas espécies são descobertas regularmente.
2. A field of knowledge or subject matter that has received little study or research
Deep ocean trenches remain largely unexplored regions of our planet.
As fossas oceânicas profundas permanecem como regiões inexploradas em grande medida do nosso planeta.