Wiktionary
unsurfaced
a. 1 (context roads English) Not having a tar macadam (asphalt) surface. 2 (context paper English) rough, absorbent, without a glaze or finish. 3 (context submarines English) Below the surface.
Usage examples of "unsurfaced".
Vorontsyev stopped die car, saw the small sideroad, unmarked and unsurfaced, md slowly turned into it.