[1] : WordNet (r) 2.0

uncharted
     adj : of unknown regions not yet surveyed or investigated;
           "uncharted seas" syn: chartless, unmapped
see also:
chartless unmapped 

[2] : Moby Thesaurus II by Grady Ward, 1.0

35 moby thesaurus words for "uncharted":
   able, enigmatic, incalculable, incognizable, mysterious, puzzling,
   sealed, strange, trackless, unapparent, unapprehended,
   unascertained, unbeknown, unclassified, undisclosed,
   undiscoverable, undiscovered, undivulged, unexplained, unexplored,
   unexposed, unfamiliar, unfathomed, unheard, unheard-of,
   unidentified, uninvestigated, unknowable, unknown, unperceived,
   unplumbed, unrevealed, unsuspected, untouched, virgin

Uncharted >> U Words
Uncharted, definition of term: Uncharted
uncharted_pag1.html