As we climbed higher and headed northward, I saw the full extent of the disaster that had smitten the hidden land. Midgard and Asgard, rocking wildly and shaking the rainbow bridge between them into fragments, were sinking into the sea, shrouded with steam.

The titanic explosion caused by the inrush of sea upon the raging atomic fires of Muspelheim was forcing the whole land to collapse upon that buried underworld. Before our eyes, as I fought to keep the plane aloft, the land solemnly sank.

There was nothing but sea and veils of steam. The blind-spot refraction around the whole land instantly vanished. The rhyme of the rune key had been fulfilled.

Ragnarok had come — the twilight and doom of the Aesir, destroying them and their amazing, wonderful civilization — and also their destroyer…

Epilogue

Of my great adventure, little remains to tell. Our night back across the frozen ocean to the expedition's schooner was without mishap. I shall never forget the amazement of Doctor Carrul and the rest of the expedition's members, when I landed my rocket plane beside the Peter Saul. Feverishly they asked excited questions when they saw Freya and the bloodstained, battered helmets and mail we wore.

I told them the truth, though I suppose I should have known they could not believe my story. But for their disbelief, I cared little. Nor did I care about what happened after our return to New York. The expedition included in its report a statement that Keith Masters, physicist and pilot, had returned in a delirious condition. They said I had been caught in an Arctic storm, and had brought with me a woman who was obviously a survivor from some storm-wrecked Norwegian ship.

I know now that the smug skepticism of modern men is not to be shaken lightly. Far in the north, beneath the frozen ocean, lie the shattered ruins of the hidden land I trod. Though men may some day penetrate to that submerged, lost land and lay bare the broken stones that once were Asgard's proud castles, they will not wholly believe.

Nor can I entirely blame them. For there are times when even to me all that I experienced takes on the semblance of a dream. It certainly seems like a dream that I rode over Bifrost Bridge with Odin and the warriors of Asgard. Did I really sit in Valhalla's high hall and feast with the nobles and captains of the Aesir? How can I be sure I fought side by side with Thor against Loki and his hordes, on that last great day?

But to reassure myself that it was no dream, I have only to turn and smile gratefully at Freya, my wife. She is dressed now in modern garb, but with the same bright golden hair, sea-blue eyes and slender grace as when I met her first on the cliffs of Midgard. For always Freya is beside me, and not one day have we ever been separated, nor will we ever be.