After a short climb we were in another world. The fog was a sea of silvery clouds below us and from it the mountains rose like islands. The moon and stars were bright in the heavens. There was the sparkle in the air that suggests enchanted lands and fairies. Halfway to timber-line we came upon ground white with snow, which made it seem all the more likely that Christmas pixies just within the shadows might dance forth on a moon-beam. Above timber-line there was no snow, but the moonlight was so brilliant that the clouds far below were shining like misty lakes, and even the bare mountainside about us looked almost as white as if snow-covered. As we left our ponies at the edge of the Boulder Field and started across that rugged stretch of débris spread out flat in the brilliant moonlight, we found the silhouette of Long's Peak thrown in deep black shadow across it. Never before had that bold outline seemed so impressive. At the western edge of Boulder Field there was a new marvel. As we approached Keyhole, right in the center of that curious nick in the rim of Boulder Field shone the great golden moon. The vast shadow of the peak, made doubly dark by the contrast, made us very silent. When we emerged from Keyhole and looked down into the Glacier Gorge beyond, it was hard to breathe because of the wonder of it all. The moon was shining down into the great gorge a thousand feet below and it was filled with a silvery glow. The lakes glimmered in the moonlight. Climbing along the narrow ledge, high above this tremendous gorge, was like a dream. Not a breath of air stirred, and the only sound was the crunch of hobnails on rock. There was a supreme hush in the air, as if something tremendous were about to happen. Suddenly the sky, which had been the far-off blue of a moonlit night, flushed with the softest amethyst and rose, and the stars loomed large and intimately near, burning like lamps with lavender, emerald, sapphire, and topaz lights. The moon had set and the stars were supreme. The Trough was full of ice and the ice was hard and slippery, but the steps that had been cut in the ice were sharp and firm. We had no great difficulty in climbing the steep ascent. We emerged from the Trough upon a ledge from which the view across plains and mountain-ranges was seemingly limitless.