Complex sentence: There was once a magic stone on the top of a mountain, thirty-six feet five inches high to correspond with the 365 degrees of the heavens, and twenty-four feet round to match the twenty-four divisions of the solar calendar.
Split into simpler sentences: There was once a magic stone on the top of a mountain. It was thirty-six feet five inches high to correspond with the 365 degrees of the heavens, and twenty-four feet round to match the twenty-four divisions of the solar calendar.