De Long’s disdain for the polar landscape soon wore off. As the Juniata crossed the Arctic Circle and pressed ever farther up the ragged west coast of the world’s largest island, something began to take hold of him. He became more and more intrigued by the Arctic, by its lonely grandeur, by its mirages and strange tricks of light, its mock moons and blood-red halos, its thick, misty atmospheres, which altered and magnified sounds, leaving the impression that one was living under a dome. He felt as though he were breathing rarefied air.