Washboarding
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Washboarding or corrugations is the formation of periodic, transverse ripples in the surface of gravel and dirt roads. Washboarding occurs in dry, granular road material with repeated traffic, traveli
Washboarding effect on a road
Fine-grained soil particles on a sandy road in Baja California
Semi-cohesive soil on a road in Kalbarri National Park, Western Australia
Coarse-grained soil particles on a gravel road in Fremont, California
Unpaved road
Videos
An unpaved road is a type of road whose surface has not been sealed with a pavement treatment, such as concrete or bitumen. An unpaved road can be a dirt road, whose surface is the native material of
A paved road in Switzerland transitioning to a gravel track
Logging road near Eséka in Cameroon
A primitive road near Buwenda, Uganda
Gravel track in Spain