The knife-edge ice crest of Traill's Pass at 17,428 feet, spanning the ridge between Nanda Devi East and Changuch.
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Traill's Pass

The Glaciated Notch of Nanda Devi: The 17,428-Foot Col from Pindari to Milam Glacier

Elevation: 5,312 m / 17,428 ft Range: Nanda Devi & Kumaon Himalayas Highway: Technical Glaciated Mountaineering Col Agency: Uttarakhand Forest Department & IMF Effective O₂: Approximately 53% of sea-level atmospheric oxygen pressure

Expedition Specifications & Technical Metrics

Coordinates: 30.3333° N, 80.0333° E
Official Summit Elevation 5,312 metres (17,428 feet)
Geographic Mountain Range Nanda Devi & Kumaon Himalayas
Connecting Corridor Pindari Valley (Bageshwar & Loharkhet) to Milam / Johar Valley (Pithoragarh)
Responsible Engineering Agency Uttarakhand Forest Department & IMF
Designated Highway / Route Technical Glaciated Mountaineering Col
Seasonal Motoring Window Late May to June & September (Extreme Technical Mountaineering)
Average Gradient & Curves 25% to 55% extreme technical icefall climbing grade • Vertical glaciated icefall route requiring fixed ropes, crampons, and ice screws
Pavement & Surface Type Shattered seracs, crevassed blue ice, active avalanche slopes, and razor shale ridges
Atmospheric Oxygen Level Approximately 53% of sea-level atmospheric oxygen pressure
Recommended Summit Stay Limit 15 minutes maximum
Nearest Fuel Logistics Bageshwar (Approx. 85 km southwest of Loharkhet) / Munsiyari (Approx. 65 km south of Milam)
Nearest Mechanical Assistance Kapkot (Approx. 60 km southwest) / Munsiyari
Permits & Border Checkposts Indian Mountaineering Foundation (IMF) & Nanda Devi Biosphere Reserve permit mandatory (Song Forest Checkpost & Martoli Indo-Tibetan Border Police Post)
Primary Expedition Character Extreme Glacial Mountaineering, Nanda Devi East History, Pindari Glacier Exploration

Geological Profile & Mountain Environment of Traill's Pass

Traill's Pass is one of the most historically legendary, technically intimidating, and perilous glaciated mountain cols in the Indian Himalayas, situated at an altitude of 5,312 metres (17,428 feet) above sea level in the Kumaon Himalayas of Uttarakhand. Located at coordinates 30.3333° N and 80.0333° E, the pass occupies a narrow, ice-bound notch on the formidable ridge linking the majestic summits of Nanda Devi East (7,434 m) and Changuch (6,322 m).

First discovered and crossed in 1830 by George William Traill, the first British Commissioner of Kumaon, the pass connects the head of the Pindari Glacier in Bageshwar district with the Gori Ganga (Milam/Johar) valley in Pithoragarh district. The terrain is an extreme amphitheater of active icefalls, hanging seracs, gaping bergschrunds, and sheer 60-degree snow-and-ice walls subject to continuous avalanche danger.

Mountaineering team navigating the massive, shattered icefalls and bergschrunds of the upper Pindari Glacier.
Mountaineering team navigating the massive, shattered icefalls and bergschrunds of the upper Pindari Glacier.

Ascent Dynamics, Highway Profile & BRO Construction

The expedition spans 12 to 14 days of intense mountaineering. Departing from the roadhead at Song near Loharkhet, trekkers follow the Pindar River through Khati, Dwali, and Phurkia to reach Zero Point at the snout of the Pindari Glacier. Beyond Zero Point, casual trekking ends: mountaineers must negotiate the heavily crevassed upper glacier, establishing high camps at Pindari Advance Base Camp (4,400 m) and the Col Base Camp (4,900 m).

Summit day requires scaling a steep, 50-degree icefall flanked by avalanching seracs to reach the knife-edge saddle of Traill's Pass at 17,428 feet. The descent into the Johar Valley drops onto the glaciated head of the Lwan Glacier, leading past the base camp of Nanda Devi East to the historic trading village of Martoli and the roadhead at Munsiyari.

Because of its immense objective dangers, Traill's Pass has claimed several mountaineering lives and has been successfully crossed only a handful of times since Traill's pioneering 1830 crossing.

The route is strictly monitored by the Indian Mountaineering Foundation (IMF) in New Delhi, requiring certified alpine expedition leaders and comprehensive rescue insurance.

Terrain Risks, Falling Rock & Alpine Environmental Factors

Massive bergschrunds and unstable ice seracs on the final 300 vertical metres require fixed ropes, snow pickets, and ice screws.

Hypoxia, acute altitude exhaustion, and severe hypothermia are imminent threats. Teams must carry oxygen cylinders and emergency medical kits.

Altitude Sickness & Medical Advisory

At 17,428 feet, altitude sickness is severe. Multiple acclimatization days at Pindari Base Camp are vital for survival.

Limit summit exposure to no more than 15 minutes and descend immediately to safer lower camps on the Lwan Glacier.

Fuel, Mechanical & Recovery Protocols

Traill's Pass is a technical mountaineering expedition inaccessible to motor vehicles. Teams require extensive porter support, technical climbing gear, and freeze-dried rations. Complete fuel is available in Bageshwar and Munsiyari.

The towering, ice-crowned pyramid of Nanda Devi East (7,434 m) soaring directly above Traill's Pass.
The towering, ice-crowned pyramid of Nanda Devi East (7,434 m) soaring directly above Traill's Pass.

Driving Guidelines for 4x4s, Sedans & Adventure Motorcycles

Traill's Pass is strictly an alpine mountaineering expedition accessible only on foot. Support vehicles can drop teams at Song and pick them up at Munsiyari.

The drive from Munsiyari through Almora, Binsar, and Nainital completes a majestic overland tour of Kumaon.

Permit Regulations, Documentation & Security Gates

Expeditions must obtain official clearance and permits from the Indian Mountaineering Foundation (IMF) and the Nanda Devi Biosphere Reserve administration.

Strict document and medical verification is conducted at the Song forest checkpost and the Martoli ITBP post.

Seasonal Clearance Cycles & Optimal Traversal Months

The crossing is attempted only during two narrow windows: late May to mid-June (before the monsoon) and September (post-monsoon).

Monsoon rains bring devastating mudslides and wet avalanches, while winter buries the pass under 20 to 30 feet of impassable snow.

Notable Memorials, Viewpoints & Geographic Markers

The awe-inspiring, close-up view of the towering southeast face of Nanda Devi East (7,434 m) from Traill's Pass is one of the most humbling sights in mountaineering history.

The historic Johar Valley, with its ancient stone villages (Martoli, Milam, Rilkot) and rich Shauka trading heritage, offers an enchanting cultural finish.

Overland Circuits & Connecting Mountain Passes

Traill's Pass is the ultimate technical mountaineering traverse of Kumaon, linking the Pindari and Johar valleys across the eastern ramparts of Nanda Devi.

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Route Logistics Blueprint & Field Risk Audit

Real-time road condition advisories, vehicle suitability checks, fuel outposts, and medical hubs.

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    Road Condition & Clearance Audit: Pothole sectors, high-ground-clearance mandates, and monsoon slides.
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    Offline Navigation & Dead Zones: Topographical route maps for areas with zero mobile phone towers.
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    Direct Emergency Authorities: Verified numbers for highway patrol, mountain rescue, and civil hospitals.
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Frequently Asked Questions About Traill's Pass

What is the elevation of Traill's Pass?

Traill's Pass is situated at an elevation of 5,312 metres (17,428 feet) above sea level in the Kumaon Himalayas of Uttarakhand.

Who first crossed Traill's Pass?

The pass was first crossed in 1830 by George William Traill, the first British Commissioner of Kumaon, who was searching for a shorter route between the Pindari and Johar valleys.

What two famous peaks flank Traill's Pass?

Traill's Pass sits on the knife-edge ridge directly between Nanda Devi East (7,434 m) and Mount Changuch (6,322 m).

Why is Traill's Pass considered so dangerous?

The pass features vertical, heavily crevassed icefalls, hanging seracs that release catastrophic avalanches, and steep 50-degree ice slopes that have repelled numerous elite expeditions.

What two valleys are connected by Traill's Pass?

The pass connects the Pindari Glacier valley in Bageshwar district with the Milam/Gori Ganga valley in Pithoragarh district.