Light, lenses and the vantage points our photography guides return to, trip after trip.
Simple habits that make the difference above 3,000 metres, from our lead trekking guides.
Headaches are the primary symptom used to diagnose altitude sickness, although a headache is also a symptom of dehydration.
When the passes clear and the skies stay honest — a season-by-season guide to trekking the valley.