1. An area of land or territory that has not been thoroughly surveyed, documented, or charted on maps; a geographic area lacking detailed cartographic information
The Amazon rainforest contains many poorly mapped regions that have never been fully explored.
A floresta amazônica contém muitas regiões pouco mapeadas que nunca foram totalmente exploradas.
2. A geographic location with incomplete or inaccurate mapping data, making navigation or detailed knowledge difficult
Cartographers are working to document the poorly mapped regions of Central Africa.
Cartógrafos estão trabalhando para documentar as regiões pouco mapeadas da África Central.