questions actually asked at various national parks.

carlsbad caverns national park
"how much of the cave is underground?"
"so what's in the unexplored part of the cave?" "does it ever rain in here?"
"so what is this, just a hold in the ground?" "how many ping pong balls would it take to fill it up?"

mesa verde national park
"did people build this, or did indians?" "why did they build the ruins so close to the road?" "do you know of any undiscovered ruins?" "why did the indians decide to live in colorado?"