Unpaved (adjective)

1. Not having a hard surface, especially a hard, flat surface made of paving stones, asphalt, or concrete.
2. Not having a cover or treatment to make it smooth or even.

Origin:

Late 16th century from un- + paved.

Examples:

1. The road to the cabin was an unpaved one-lane dirt road.
2. I avoid taking my sports car on unpaved roads because it damages the undercarriage.
3. The museum was surrounded by an unpaved parking lot.
4. An unpaved trail leads up the mountain.
5. The lakefront was an unpaved area that was open to the public.