Gravel road
Videos
A gravel road is a type of unpaved road surfaced with gravel that has been brought to the site from a quarry or stream bed. Gravel roads are common in less-developed nations, and also in the rural are
A gravel road in Estonia
Maintenance of a gravel road in Denmark
Gravel road at the Saviselkä village in Kärsämäki, Finland
Logging railroad converted to logging truck use in northwest Oregon
Washboarding
Videos
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