1. An area of land or geographic location that has not been officially documented, mapped, or recorded in historical or administrative records
Explorers discovered an unrecorded region deep in the Amazon rainforest.
Exploradores descobriram uma região não documentada no coração da floresta amazônica.
2. A territory lacking written or official accounts of its existence, boundaries, or characteristics
The unrecorded region remained unmapped until the 21st century.
A região não documentada permaneceu sem mapa até o século XXI.