uncharted
adjective
[ ʌnˈtʃɑːtɪd ]
• (of an area of land or sea) not mapped or surveyed.
• "the plane landed on a previously uncharted islet"
Similar:
unexplored,
untravelled,
undiscovered,
unresearched,
unplumbed,
unfamiliar,
unknown,
strange,
unmapped,
unsurveyed,
