What is "unmetalled"

Usage examples of "unmetalled".

It was unmetalled but ruts and hoofprints testified to its recent usage.

He pointed instead to one of the several unmetalled side roads we had passed with 'no entry' signs on them, and asked where they led.

The roads were unmetalled, mere stony scratches along the slopes of the mountains, and the mean houses of turf and rubble were dwarfed by the looming peaks.