Palisade, or stakewall, made of vertical pales placed side by side with one end embedded in the ground and the other typically sharpened, to provide protection; characteristically two courses of waler are added on the interior side to reinforce the wall. Picket fences, generally a waist-high, painted, partially decorative fence Roundpole fences, similar to post-and-rail fencing but more closely spaced rails, typical of Scandinavia and other areas rich in raw timber. Slate fencing in Mid-Wales Slate fence, a type of palisade made of vertical slabs of slate wired together.