We camp outside Ronbuk monastry, in heavy fog. A sleepless night: yak bump into the tents at all hours, and the temperature falls below the range of the thermometer. I wake about 3am, put on every item of clothing I can find, and it's still too cold to sleep.
Next morning, the fog clears, and in the clear bright light of day, the peak of Mount Everest looks close enough to reach out and touch.
