The arch was closer — and in my awe I forgot for the moment Larry and aught else. For this was no rainbow, no thing born of light and mist, no Bifrost Bridge of myth — no! It was a flying arch of stone, stained with flares of Tyrian purples, of royal scarlets, of blues dark as the Gulf Stream’s ribbon, sapphires soft as midday May skies, splashes of chromes and greens — a palette of giantry, a bridge of wizardry; a hundred, nay, a thousand, times greater than that of Utah which the Navaho call Nonnegozche and worship, as well they may, as a god, and which is itself a rainbow in eternal rock.

It sprang from the ledge and winged its prodigious length in one low arc over the sea’s crimson breast, as though in some ancient paroxysm of earth it had been hurled molten, crystallizing into that stupendous span and still flaming with the fires that had moulded it.

Closer we came and closer, while I watched spellbound; now we were at its head, and the litter-bearers swept upon it. All of five hundred feet wide it was, surface smooth as a city road, sides low walled, curving inward as though in the jetting-out of its making the edges of the plastic rock had curled.

On and on we sped; the high thrusting precipices upon which the bridge’s far end rested, frowned close; the enigmatic, dully shining dome loomed ever greater. Now we had reached that end; were passing over a smooth plaza whose level floor was enclosed, save for a rift in front of us, by the fanged tops of the black cliff’s.

From this rift stretched another span, half a mile long, perhaps, widening at its centre into a broad platform, continuing straight to two massive gates set within the face of the second cliff wall like panels, and of the same dull gold as the dome rising high beyond. And this smaller arch leaped a pit, an abyss, of which the outer precipices were the rim holding back from the pit the red flood.

We were rapidly approaching; now upon the platform; my bearers were striding closely along the side; I leaned far out — a giddiness seized me! I gazed down into depth upon vertiginous depth; an abyss indeed — an abyss dropping to world’s base like that in which the Babylonians believed writhed Talaat, the serpent mother of Chaos; a pit that struck down into earth’s heart itself,

Now, what was that — distance upon unfathomable distance below? A stupendous glowing like the green fire of life itself. What was it like? I had it! It was like the corona of the sun in eclipse — that burgeoning that makes of our luminary when moon veils it an incredible blossoming of splendours in the black heavens.

And strangely, strangely, it was like the Dweller’s beauty when with its dazzling spirallings and writhings it raced amid its storm of crystal bell sounds!

The abyss was behind us; we had paused at the golden portals; they swung inward. A wide corridor filled with soft light was before us, and on its threshold stood — bizarre, yellow gems gleaming, huge muzzle wide in what was evidently meant for a smile of welcome — the woman frog of the Moon Pool wall.

Lakla raised her head; swept back the silken tent of her hair and gazed at me with eyes misty from weeping. The frog-woman crept to her side; gazed down upon Larry; spoke — SPOKE— to the Golden Girl in a swift stream of the sonorous, reverberant monosyllables; and Lakla answered her in kind. The webbed digits swept over O’Keefe’s face, felt at his heart; she shook her head and moved ahead of us up the passage.

Still borne in the litters we went on, winding, ascending until at last they were set down in a great hall carpeted with soft fragrant rushes and into which from high narrow slits streamed the crimson light from without.

I jumped over to Larry, there had been no change in his condition; still the terrifying limpness, the slow, infrequent pulsation. Rador and Olaf — and the fever now seemed to be gone from him — came and stood beside me, silent.

“I go to the Three,” said Lakla. “Wait you here.” She passed through a curtaining; then as swiftly as she had gone she returned through the hangings, tresses braided, a swathing of golden gauze about her.

“Rador,” she said, “bear you Larry — for into your heart the Silent Ones would look. And fear nothing,” she added at the green dwarfs disconcerted, almost fearful start.

Rador bowed, was thrust aside by Olaf.

“No,” said the Norseman; “I will carry him.”

He lifted Larry like a child against his broad breast. The dwarf glanced quickly at Lakla; she nodded.

“Come!” she commanded, and held aside the folds.

Of that journey I have few memories. I only know that we went through corridor upon corridor; successions of vast halls and chambers, some carpeted with the rushes, others with rugs into which the feet sank as into deep, soft meadows; spaces illumined by the rubrous light, and spaces in which softer lights held sway.

We paused before a slab of the same crimson stone as that the green dwarf had called the portal, and upon its polished surface weaved the same unnameable symbols. The Golden Girl pressed upon its side; it slipped softly back; a torrent of opalescence gushed out of the opening — and as one in a dream I entered.

We were, I knew, just under the dome; but for the moment, caught in the flood of radiance, I could see nothing. It was like bein............