This is a new terrain type for gameplay. It acts like water, but is even more annoying, as, after the current round ends, towers placed here are uprooted and moved this far: This will continue until the tower goes off the edge of the screen, as in the case of River of Terror (upcoming), is smashed against rocks, or, as in Boneyard Falls (again, upcoming), falls off the edge of the waterfall. Be careful about this terrain!