|Possible fence alternative|
The small wall is an unimplemented building in The Forest.
The small wall can only be obtained by spawning using console commands. The current command for it is
PlaceBuiltObjects Ex_SmallWallChunkBuilt 1. This will place one, change the number at the end to place more at once. It can somewhat be stacked, though difficult, the player needs to stand still when spawns them. It doesn't have a custom placement. It is unknown if mods can allow this building to be placed normally.