Nathu La Pass sits at 4,310 metres (14,140 feet) on the India–China border in East Sikkim, roughly 54 km from Gangtok. It is one of the few places in India where you can stand at an active international border and see the other country's army watching you back — from roughly 15–20 metres away. The standard East Sikkim day trip combines Nathu La with Tsomgo Lake and New Baba Mandir — all three in a single day from Gangtok. We have been running this circuit since 2012. This is the guide we give guests the night before.
The 200-permit limit: what it actually means for your trip
The Indian Army issues a maximum of 200 civilian permits for Nathu La per day. This is a hard ceiling — when 200 are issued, no more are given, regardless of how far you have travelled or who your operator is. In peak season (October–November, April–May), permits are exhausted within hours of the window opening. Your travel agency must apply the evening before your planned visit. If they do not, you will not get one.
The permit is processed through a registered Sikkim travel agency and costs ₹4,000–5,000 per vehicle. This covers the permit fee and agency handling. You cannot apply independently as a tourist — it must go through a registered operator. We include Nathu La permit processing in all East Sikkim itineraries we plan.
Applied the day before, granted the morning of — and non-refundable
Here is the part that catches many guests off guard. Your agency applies for the Nathu La permit the evening before your planned visit. The government does not confirm the permit until the morning of travel, after assessing that day's weather and road conditions at the pass. If the army decides conditions are unsuitable — snow, fog, poor visibility on the high road — the permit is not granted and the trip does not happen.
The problem: the fee is non-refundable once the application has been submitted. If access is denied due to weather, you lose the ₹4,000–5,000. Weather cancellations at Nathu La are not rare — particularly in winter and during the monsoon fringes. We are clear about this with every guest before we apply. We do not submit a Nathu La permit application without the guest understanding and accepting this risk.
You must leave by 9 AM — and Nathu La always goes first
Every experienced Sikkim operator takes guests to Nathu La before anywhere else on the East Sikkim circuit — and this is not a preference, it is a necessity. Access to the border area is restricted to morning hours. If you visit Tsomgo Lake or Baba Mandir first and arrive at Nathu La later in the day, the army will not let you in. The window is closed.
You need to leave Gangtok by 9 AM at the latest — 6:30–7:00 AM is better during peak months. The drive to Nathu La takes roughly 2.5 hours. Leaving at 6:30 AM gets you to the pass by 9:00 AM, well inside the permitted window. The full day runs: Nathu La first thing in the morning → New Baba Mandir on the way back → Tsomgo Lake in the afternoon. Both Baba Mandir and Tsomgo work fine later in the day when the Nathu La window has already closed.
What you actually see at the border
The India–China border at Nathu La is marked by a low stone wall and a line of concrete pillars running across the ridgeline. Indian Army soldiers stand guard on the Indian side. On the Chinese side, People's Liberation Army soldiers are stationed and visible — typically from 15–20 metres away. They are watching. This is not a reconstructed heritage site or a fenced viewpoint at a safe distance. It is an active military border, and the proximity to another country's armed forces is genuinely striking.
You can see exactly where India ends and China begins. The terrain is open high-altitude grassland — treeless, wind-exposed, with the ridgeline forming the natural boundary. On clear days, the view across into Tibet is wide and unobstructed. This is the same pass that was part of the ancient Silk Road. After being closed for decades following the 1962 war, limited trade through Nathu La was revived in 2006.
Photography at Nathu La: one hard restriction
Photography is permitted at Nathu La with one specific restriction: you cannot take photographs directly facing the Chinese side of the border — that is, with your camera pointed toward China. Indian Army soldiers are present and will stop you immediately if you attempt this. This is enforced on the spot, not selectively. Photography of the Indian side, the landscape, the border gates, the signage and portraits against the backdrop is generally fine. Follow soldier instructions immediately — this is an active military post, not a tourist attraction with negotiable rules.
Oxygen at 4,310m
At 4,310 metres, the air contains roughly 60% of the oxygen available at sea level. Mild symptoms — headache, breathlessness, fatigue — are common, particularly for guests arriving directly from lower altitudes without acclimatisation time at Gangtok. We carry oxygen cylinders in all vehicles on the East Sikkim circuit as standard equipment. If you feel unwell at the pass, use the cylinder immediately. At this altitude, symptoms can escalate quickly if left unaddressed.
Children under five and guests with heart or respiratory conditions should discuss the altitude with their doctor before booking. For most healthy adults, Nathu La is manageable — the visit is typically 30–45 minutes — but moving slowly, keeping warm at the exposed ridgeline, and not rushing makes a significant difference.
The road from Gangtok to Nathu La
The road from Gangtok to Nathu La is in good condition throughout. The route climbs steadily through dense rhododendron and oak forest before breaking into open alpine terrain. Three stops make up the full East Sikkim circuit: Nathu La (the border pass), New Baba Mandir (a large temple complex dedicated to Harbhajan Singh, a soldier venerated as a guardian of the border, at around 4,000 metres) and Tsomgo Lake (3,753m, a glacial lake roughly halfway between Gangtok and the pass). We do Nathu La first — mandatory, as explained above — then Baba Mandir and Tsomgo on the return in the afternoon. The final ascent to the pass itself is steep but the road surface is solid.
When Nathu La is closed
- Every Monday — the pass is closed to civilian visitors on Mondays without exception.
- Weather-related closures — heavy snow, fog or poor visibility at the pass. The army decides on the morning of travel. No advance warning is given.
- National holidays and occasional military events — sometimes announced with short notice.
- Winter months (December–February) — weather disruptions are more frequent, though the pass does not close for the entire season the way some North Sikkim roads do.
