Nepal's Valley That Stayed Sealed Off Until 2003 — and Still Takes Two People to Enter

North of the Annapurna Circuit, tucked against the Tibetan border, there's a valley that most of the roughly one million people who visit Nepal each year have never heard of. Nar Phu wasn't just remote — it was legally off-limits. The Nepali government kept it sealed to foreign trekkers until 2003, and even now you can't simply walk in: you need a special permit, a licensed guide, and a minimum of one other person, because solo trekking here still isn't allowed.

The valley sits between the main Annapurna Circuit trail and the Tibetan plateau, walled in by 7,000m peaks including Kang Guru and Himlung Himal. Phu village is the more dramatic of the two settlements — built up a fortress-like hill with a Buddhist gompa, Yul Gompa, crowning the top, positioned exactly where a defensible lookout over the valley approach would sit. Nar, lower and larger, has three monasteries of the Nyingma school of Tibetan Buddhism. Villagers themselves say their ancestors arrived from Tibet at least a thousand years ago; Nepali government land records point to a more recent 17th- or 18th-century settlement. Either way, before Buddhism took hold, the valley's people followed Bon, the animist religion that existed across the Tibetan plateau long before Buddhist monks arrived — a detail that still shapes local ritual today, layered underneath centuries of Buddhist practice.

What it actually costs to go

The restricted-area system, which also covers Upper Mustang, Upper Dolpo and a handful of other border valleys, exists for a straightforward reason: these are sensitive frontier zones close to Tibet, and Nepal manages foreign access to them deliberately, both for security and to slow the pace of change in communities that had almost no outside contact for generations. It's the same logic, and largely the same paperwork process, that governs Nepal's other restricted-area treks — you can't book it as a walk-in the way you can Poon Hill or even the main Annapurna Circuit.

What this means for trekkers

Most itineraries run 12–16 days and combine Nar Phu with a stretch of the classic Annapurna Circuit and the Kang La or Thorong La pass, rather than treating it as a standalone trip — which makes sense given how much infrastructure and acclimatization the wider circuit already provides. If a valley that stayed closed until this century is the kind of place you'd go out of your way for, that's exactly the itinerary to ask about.

Source: Wikipedia — Nar Phu, cross-checked against current Nepal restricted-area permit rates published by registered Annapurna-region trekking agencies.

Cover photo: Clinton Weaver via Pexels (Pexels License).