1) Type of road 
A corduroy road or log road is a type of road made by placing sand-covered logs perpendicular to the direction of the road over a low or swampy area. The result is an improvement over impassable mud or dirt roads, yet rough in the best of conditions and a hazard to horses due to shifting loose logs. Corduroy roads can also be built as a foundation...
In North America, a corduroy road was a road constructed with logs laid together over swamps or marshy places for carriages to pass over.