You can't run a water pump. Working with water pumps as part of my job, I can attest the vibrations would set off another landslide. Even if you had men hold the tube so it never touched the ground, sand, or rock around it, the people holding the tube, in which the water is pumping out, would vibrate. If you think running a water pump wouldn't vibrate an unstable pile of rocks and sand above you, Google it and see just how much vibration water pumps create. Better yet, go get a water pump big enough to pump out the tide coming into a cave, and see for yourself. You had to do everything precise. If you watched the whole show you would understand this.
Review of Dominoes
