untraversed

koskematon, käyttämätön That has not been traversed; unexplored.
1798, (w), A Voyage of Discovery to the North Pacific Ocean, London: G.G. and J. Robinson, Volume I, Chapter II, p. 44, entry for 21 October, 1791,https://catalog.hathitrust.org/Record/009655120

I was therefore compelled to relinquish, with great reluctance, the favorite project of further examining the coast of this unknown though interesting country; and, directing our route over an hitherto untraversed part of these seas, we proceeded without further delay towards the pacific ocean.

In front of us the untraversed plain shone white as a new-laid tablecloth and dazzling even through a pair of smelter’s glasses.