1. An area or territory that is not yet discovered, explored, or understood
The deep ocean remains a región incógnita for many scientists.
O oceano profundo continua sendo uma região incógnita para muitos cientistas.
2. A place shrouded in mystery or lacking sufficient information
The interior of the rainforest was still a região incógnita in the 19th century.
O interior da floresta tropical era ainda uma região incógnita no século XIX.