I laughed so hard after reading this:

The truly amazing thing about these volcanos is that they are truly so big, that people are to the mountain as fleas are to a dog. The scale of size is hard to image. But perhaps it helps if you imagine a flea on the back of a dog. The flea is in a forest of hair on the dogs back. If the flea were to climb to the top of a hair and look up, the flea would sea the dogs head in the far distance. The flea would look at the dogs head and exclaim there is the dog. The flea would not understand that he sees only the dogs head in the distance, not the whole dog. The flea doesn’t understand that he is actually on the dog.

Great explanation!