A little further on, we removed our skis. It was just drift snow here and, with our skis over our shoulders, we made steady progress, choosing the rock outcrops and avoiding the drifts.

At last we stood at the top of the pass.

The main peaks were still above us. But they only topped our present position by a few hundred feet. We were looking out upon a world of jumbled rocks — black teeth in white gums of snow. It was cold and silent. Nothing lived here. Nothing had ever lived here. We might have been at one of the Poles or in some forgotten land of the Ice Age. This was the territory of Olympian Gods. The dark peaks jostled one another, battling to be the first to pierce the heavens, and all about them their snow skirts dropped away to the world below, that nice comfortable world where human beings lived. 'Wesson should bring his camera up here,' I said, half to myself.

Mayne laughed. 'It'd kill him. He'd have heart failure before he got anywhere near the top.'

It was cold as soon as we stood still. The wind was quite strong and cut through our windbreakers. It drove the snow across the rocks on which we stood like dust. It was frozen, powdery snow. I could sift it through my gloved hands like flour. Here and there along the ridges a great curtain of it would be lifted up by the wind and would drift across the face of the rock like driven spume. There was no sign of the blue sky that had looked so bright and gay from Col da Varda. The air was white with light.

Mayne pointed to the great bulk of Monte Cristallo. The sky had darkened there and the top of the mountain was gradually being obscured as though by a veil. The sun was only visible as an iridescent light. 'Going to snow soon," he said. 'Better be moving. I'd like to get across the glacier before it comes on thick. Later it doesn't matter. We'll be in the pass. If it looks bad after lunch, we'd better come back by Lake Misurina.'

He was so confident and I was so reluctant to face the steep descent into that basin that I raised no objection to going forward. Soon we reached the glacier and put on our skis. It was very little different to the rock slopes that encompassed it, for it was covered with a blanket of snow. Only here and there was there any sign of the ice that formed the foundation for the snow. The going was much easier now. The slope was quite gentle and our skis slid easily across the snow with only an occasional thrust of our sticks. The brightness slowly dimmed and the sky became heavy and leaden. I did not like the look of it. You feel so small and unimportant up there in the mountains. And it's not a pleasant feeling. You feel that one rumble of thunder and the elements can sweep you out of existence. One by one the peaks that surrounded the glacier in a serrated edge were blotted out.

We were barely halfway across the glacier when it began to snow. At first it was just a few flakes drifting across our path in the wind. But it grew rapidly thicker. It came in gusts, so that one moment it was barely possible to see the edges of the glacier and the next it was almost clear, so that it was possible to see the encircling crests that swept upwards to bury their peaks in the grey sky.

Mayne had increased the pace, I became very conscious of the pounding of my heart. Whether it was the continued exercise at that altitude or nervousness I do not know. Probably both. In all that world of grey and white, the only friendly thing was Mayne's back and the slender track of his skis that seemed to link us like a rope across the snow.

At last we were across the glacier. The snow was falling steadily now, a slanting, driven fall that stung the face and clung to the eyes. The slope became steeper. We began to travel fast, zig-zagging down through tumbled slopes of soft, fresh snow. It became steeper still and the pace even faster.