LakeSerious risk

Suraj Tal

Below Baralacha La, Lahaul · Himachal Pradesh

One of India's highest lakes, source of the Bhaga, sitting right beside the Leh–Manali highway below Baralacha La.

Visit-safety grade
Serious

Manageable with care. The biggest factor is altitude / ams: 4883 m — very high altitude. Est. SpO₂ ≈ 77% arriving unacclimatised. AMS common; HAPE/HACE possible. Sleeping-gain limits are critical.

Altitude / AMS28 pts
4883 m — very high altitude. Est. SpO₂ ≈ 77% arriving unacclimatised. AMS common; HAPE/HACE possible. Sleeping-gain limits are critical.
Remoteness / rescue18 pts
Very remote — assume you are on your own in an emergency.
Water3 pts
Still water; standard boating and slippery-edge caution.

At 4883 m, altitude is the quiet risk. Arriving from low elevation in a single day gives your body no time to adjust — pace the climb where you can, and learn the early signs of AMS.

Score 49/100, re-derived from the site’s real characteristics — never a marketing grade. A higher number is not “don’t go”; it is “go informed.”

Know before you go
  • serious AMS/HAPE risk near 4900m on a fast highway ascent with no rest day
  • freezing wind and cold even in mid-summer
  • very remote stretch of highway with no towns, fuel or medical help for hours
The safety code · lakes
  • If it sits high, the thin air — not the water — is the real risk; don't race up from the plains, and learn the signs of AMS.
  • Alpine water and weather turn dangerously cold fast, even in summer — carry warm layers.
  • Remote shores mean slow rescue; share your plan and turn back with time to spare.
When to go
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Prime windowShoulderOff-season
Photos

Photos via Wikimedia Commons — full attribution on the credits page.

The essentials
Nearest town
Keylong / Sarchu
Elevation
4,883 m
Visit
Roadside / drive-up
Approach
≈0.3 km each way · 20 m climb
Season
Jun–Sep (Leh–Manali highway open)
Permits
2 to arrange (Himachal Pradesh)
How to reach
Starting point
Keylong / Sarchu
Himachal Pradesh
By air
  • Kullu (KUU)~102 km
  • Dharamshala (Kangra) (DHM)~127 km
By rail
  • Joginder Nagar~105 km
  • Pathankot~175 km
By road

Drive to the roadhead Keylong / Sarchu. From Kullu (~102 km) shared taxis and state buses run the last leg to Suraj Tal.

Distances are straight-line (as the crow flies), computed from the coordinates. Real road distance and driving time in the mountains are longer — confirm current road status and the last motorable point with your operator, especially in monsoon and winter.

Right now
−16°, clear skies· wind 7 km/h

Live from Open-Meteo at this spot, adjusted to 4,883 m. Mountain weather turns fast — treat this as a hint, not a promise.

Altitude & air
Very high altitude
Elevation
4,883 m
Oxygen vs sea level
~53%
Est. SpO₂ (unacclimatised)
~77%
Air pressure
426 mmHg

AMS common; HAPE/HACE possible. Sleeping-gain limits are critical.

Where it is
3D replay

See it in 3D

A Google-Earth-style flyby that drops in from orbit and traces the real approach trail up to Suraj Tal(where it’s mapped in OpenStreetMap), over real satellite terrain — so you can read the climb and the lie of the land before you go.

More lakes
Serious
Pangong Tso
Ladakh
Serious
Chandratal Lake
Himachal Pradesh
Low
Loktak Lake
Manipur

Coordinates, heights and depths are approximate, curated from public sources — good enough to plan and to gauge risk, not surveyed. The safety grade is a deterministic guide, not a guarantee; conditions change with weather, water level and crowds.