Slow days · Dingboche
Altitude talk at the Pheriche aid post
Walk over the ridge from Dingboche to Pheriche, where the Himalayan Rescue Association has run an aid post since 1973, and hear the volunteer doctors' daily talk on altitude sickness. Useful knowledge before going higher, and good acclimatisation too.
Altitude illness kills trekkers every year, nearly always because someone kept climbing with symptoms. In 1973 the Himalayan Rescue Association, a Nepali non-profit, opened an aid post at Pheriche to treat altitude illness, injuries and porters' ailments, and to teach prevention. Each season volunteer doctors, Nepali and international, staff it and give a talk most afternoons.
The talk covers the essentials: how the body adapts, the symptoms of acute mountain sickness, and the dangerous forms, high-altitude pulmonary and cerebral oedema. You will hear the golden rules: do not go higher with symptoms, descend if they worsen, never leave someone with altitude illness alone. There is time for questions. A donation supports the post's work for porters and locals.
From Dingboche, the walk to Pheriche crosses the low ridge in about an hour, gaining and losing a little height, and returns the same way or via a contouring trail. It makes a gentle acclimatisation outing on the rest day. Opening times and staffing depend on the season, so check current status before you travel and ask your lodge on arrival.
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Questions
What is the HRA aid post at Pheriche?
The Himalayan Rescue Association runs a seasonal aid post at Pheriche, opened in 1973, staffed by volunteer doctors during the main trekking seasons. It treats altitude illness, injuries and other problems for trekkers, porters and locals, and gives daily talks on altitude sickness. Check current status before you travel.
How far is Pheriche from Dingboche?
About an hour on foot over the low ridge separating the Imja and Khumbu valleys. Both lie at around 4,250–4,400 m. Many trekkers walk over on their acclimatisation day to hear the altitude talk and walk back to Dingboche to sleep. Some itineraries stay in Pheriche instead of Dingboche.
What are the warning signs of serious altitude sickness?
Severe headache that does not respond to painkillers, vomiting, loss of coordination such as stumbling, confusion, unusual drowsiness, and breathlessness at rest or a wet cough. These can signal cerebral or pulmonary oedema, both life-threatening. The treatment is immediate descent and medical care. Never go higher with these symptoms.
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