These are from the start one of the many deactivated roads in our area.  Deactivation is when they finish logging, they rip out all the culverts from the road and cross ditch it to prevent erosion.  They make excellent 4x4 Trails.  An 82 Toyota, a 78 Chevy Blazer/Pickup Hybrid and my BII all did this trail.  There was a pretty good mudhole about 50 feet behind where this pic was taken.