If a cavalry, monstrous cavalry or chariot model marches, charges, flees, pursues or overruns over an obstacle, or charges an enemy on the other side of an obstacle, it must take a Dangerous Terrain test (see earlier in this chapter).

Obstacles do not otherwise impede movement. If a unit ends its move with some of its ranks or files on different sides of the obstacle, simply place the models appropriately on both sides of the obstacle – the unit suffers no ill-effects.