You should be able to raise the bike off of the ground by about five inches. If you can't, the bike is probably too big for you. Under demanding riding conditions, you will want to be able to quickly reach the ground when necessary. Next, set the seat to the right height. In a relaxed position, you should be able to extend your leg and touch the pedal at its lowest point with the heel of your foot.
Similar roads are mining roads and logging roads, which effectively perform the same function.
These roads are usually wide enough for a four-wheel drive vehicle to comfortably pass. They are nice because they are always well mapped and well maintained, generally providing a more relaxed ride. It is common to encounter stunning vistas along these routes, which open up to panoramic splendour across tranquil valleys. The other variety are called Single-Tracks. These are fast, fun rides in which technique plays an important role.