As the claw rose and punched into the wall above their heads, coming down with the inevitability of eternity upon their craniums, the ground gave way. With a sudden, calamitous tremor, the ground collapsed, sending the monstrosity falling into the tunnel below, claw dragging down the wall and turning as the beast fell, roaring its mechanical fury as the machine strained against the destruction it had wrought. The tunnel outside the room gave way, collapsing entirely as the beast thundered into the ground of the floor below, cracking it and falling through it in turn.