But yet, its your imagination that is making you think that its entirely unbelievable...

Its your own opinion and thought process that built these massive caverns in your head that are impossible to say exists, and based on your imagination alone you decide that the size of the rooms that your own imagination invented are too large to exist..

i never said how big these caverns were, or how deep they went.... you just decided I was crazy for saying such, but in doing so had to use the far extremes of your own imagination to draw the conclusion....