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Additional Practice · Q5

Q.What did the travellers see and do at the top of the pass at 5,515 metres, and why did the hissing petrol tank alarm the author? (Answer in 30–40 words.)

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At the wind-battered summit of the pass, the travellers observed a traditional ritual at the prayer-flag cairn before a hissing petrol tank gave the author a fright.

Reaching the top of the pass at 5,515 metres, the group found a large cairn of stones draped with white silk scarves and weather-beaten prayer flags, and, following local custom, they walked around it in a clockwise direction. While Tsetan checked the tyres, he also unscrewed the cap of the petrol tank, which let out a sharp, sudden hiss — the result of the very thin, low-pressure air at that altitude allowing the fuel inside to expand. To the author, unfamiliar with this effect, the noise sounded alarmingly like an escaping gas leak that might catch fire, th …

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