Wordnet 3.0
ADJECTIVE (1)
1. 
 (of unknown regions) not yet surveyed or investigated; 
- Example: "uncharted seas"[syn: chartless, uncharted, unmapped]
WordNet (r) 3.0 (2006):
unmapped
    adj 1: (of unknown regions) not yet surveyed or investigated;
           "uncharted seas" [syn: chartless, uncharted,
           unmapped]