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Relevance: GS-I (Geography) | GS-III (Disaster Management) | Source: The Indian Express

The Context: A new DRDO-backed study has raised a massive red flag for Badrinath. Scientists have mapped highly unstable “hanging glaciers” dangling right above the holy town. If climate change snaps them, they could trigger a catastrophic ice avalanche—wiping out local infrastructure and threatening the lives of millions of pilgrims.

1. The Anatomy of a “Hanging Glacier”

Forget massive ice sheets sitting peacefully in flat valleys. Hanging glaciers are nature’s precarious balconies.

  • Clinging to Cliffs: These are giant chunks of ice literally stuck to steep mountain edges. With nothing underneath to support them, they are highly prone to sudden snapping.
  • The Global Warming Trigger: As temperatures rise, the ice touching the mountain rock begins to melt. The glacier loses its “grip” (basal resistance) and simply slides off, dumping millions of tonnes of ice, water, and rock in seconds.

2. The Doomsday Scenario for Badrinath

Scientists mapped three such glaciers hovering dangerously between 4,700 and 5,465 metres, directly above the town.

  • The Giant Threat: The most dangerous glacier holds 5.32 million cubic metres of ice on a steep 34-degree slope.
  • A 280 km/h Avalanche: If this ice block detaches, computer models show it will hurtle down the mountain at a terrifying 78.5 metres per second (over 280 km/h).
  • The Impact Zone: The avalanche would obliterate nearly 400 buildings, a helipad, and bridges. While the main Badrinath shrine might narrowly miss a direct hit, the massive debris cloud would bury the surroundings.

3. How Do We Survive This?

  • Strict “No-Build” Zones: Badrinath hosts around 1.7 million pilgrims a year. Scientists are pleading with the government to instantly halt the blind construction of hotels and concrete infrastructure directly in these mapped avalanche paths.

Value Box: Key Geography & Disaster Institutions
The Alaknanda River Badrinath sits in the Alaknanda basin, which is loaded with roughly 219 hanging glaciers (30% are highly unstable). The Alaknanda eventually meets the Bhagirathi river at Devprayag to officially form the mighty Ganga.
DGRE (DRDO) The Defence Geoinformatics Research Establishment. It is the top government lab responsible for mapping these terrifying avalanche hazards across the Indian Himalayas.
Tourism “Carrying Capacity” A vital geographical concept: a fragile environment can only handle a specific number of people before it collapses. Unregulated construction to house 1.7 million pilgrims directly ignores this safety limit.

Practice MCQ

Q. Consider the following statements regarding Himalayan geography and glaciology:

  1. Hanging glaciers rest securely on flat valley floors, making them highly stable and unlikely to trigger sudden avalanches.
  2. The Alaknanda river meets the Bhagirathi river at Devprayag to officially form the Ganga river.

Which of the statements given above is/are correct?

(a) 1 only     (b) 2 only     (c) Both 1 and 2     (d) Neither 1 nor 2

Answer: (b) 2 only
Hint: Statement 1 is incorrect because hanging glaciers do not rest on flat valley floors; they cling precariously to steep mountain cliffs and are highly prone to sudden, catastrophic snapping. Statement 2 is factually correct regarding the origin of the Ganga.

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