It is simply saying that all is now in chaos. I am assuming the part that is confusing is "the quiet sands have run." It could easily be alluding to the way that during a sandstorm, the calm sands of the surface are no longer there as the chaos of the storm casts them about.
I can't see the picture if I could only see the picture clearly I would help you
Answer: "C"
Explanation: He decided to go "THROUGH" the museum by himself rather than with his class.
The answer is An encyclopedia