A Newbery Medal Winner Professor William Waterman Sherman intends to fly across the Pacific Ocean. But through a twist of fate, he lands on Krakatoa, and discovers a world of unimaginable wealth, eccentric inhabitants, and incredible balloon inventions.Winner of the 1948 Newbery Medal, this classic fantasy-adventure is now available in a handsome new edition. “William Pene du Bois combines his rich imagination, scientific tastes, and brilliant artistry to tell astory that has no age limit.”–The Horn Book