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Agence France-Presse

The historic Zittel hut on top of a snow-capped mountain high in the Austrian Alps has weathered many a storm.
But ever more extreme climate change is taking a terrible toll on the century-old wooden refuge.
“When your hand fits into a crack in the foundation, there is need for action,” says Georg Unterberger, who is in charge of mountain refuges and trails at the Austrian Alpine club.
The trails up to the refuge on the Hoher Sonnblick mountain, which stands at 3,106 metres (10,190ft), are also suffering.

Experts say warmer temperatures across the Alps are accelerating glacier melt and thawing permafrost, the year-round ice that binds together giant slabs of rock.
This has increased the danger of sudden rockfalls and landslides, damaging paths and putting more pressure on the often ageing and neglected huts.
Austria’s alpine clubs are currently closing up to four huts a year as they become unsafe or too costly to maintain.

With the country heavily dependent on alpine tourism, the costs of keeping up the trails “have doubled in the last five years”, says Unterberger, who also works as a building surveyor.
Each year about one million people visit the more than 200 mountain huts the Austrian Alpine club – the country’s biggest – operates.
The trail up to the Zittel in the Salzburg region was always a black-rated, or difficult, one, but “now it’s even more dangerous”, Unterberger says.

Hikers may now need climbing gear to reach it as the retreating glacier that once went all the way up to the popular refuge has exposed steep rock faces and vast fields of scree.
“I’ve seen hikers struggle on all fours to make it,” Unterberger says. Work on trails has dramatically increased in recent years, with ropes and steel rungs having to be put in place.
At the Zittel hut, the crumbling foundations and the weather-worn wooden shingles require urgent renovation and thermal insulation.
Thawing permafrost already threatened the very existence of the hut and the adjacent observatory – one of the world’s oldest high-altitude weather stations – years ago, with the peak at risk of falling apart.
We really have a critical situation here in terms of the rate at which temperatures are increasing
Elke Ludewig, head of the Sonnblick Observatory
To keep it from disintegrating, workers rammed steel anchors 20 metres into the mountaintop and further supported the summit with concrete braces.
For now the peak is stable, but further measures cannot be ruled out.
More money is needed to remedy the decaying infrastructure in the Austrian Alps, with experts saying 272 out of 429 mountain refuges, as well as 50,000km (31,000 miles) of trails, are in dire need of repair.
In a petition earlier this year, the cash-strapped alpine clubs urged the government to provide an emergency fund of €95 million (US$102 million).

So far the government has pledged just €3 million.
Unlike in neighbouring Switzerland, where the cantons are in charge of maintaining the trail network, Austrian alpine clubs heavily rely on ever scarcer volunteers.
“Many of our 25,000 volunteers are more than 65 years old and recruiting young people has been a challenge,” says Unterberger, observing a trend towards “micro-volunteering” for a few hours or a day, but not more.
The Zittel refuge shares the summit with the Sonnblick Observatory, which has been measuring and documenting the changes to climate since it opened in 1886.

Up on the mountain, the temperature has been recorded for 138 years straight, the longest uninterrupted high-altitude data anywhere in the world.
This data helps scientists worldwide to refine their climate models, and also offers a glimpse into the future.
Since the 1950s all high mountain regions like “the Alps, the Rocky Mountains, the Andes, the Himalayas – have already seen an average annual temperature increase of more than two degrees Celsius (3.6 degrees Fahrenheit)”, which is twice the global average, observatory head Elke Ludewig says.
“As nice as it is to still see snow and glaciers, we really have a critical situation here in terms of the rate at which temperatures are increasing,” she says.


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Tourism

Austria’s alpine huts and trails crumble as climate change thaws the ice beneath them

A view from the summit of the Hoher Sonnblick mountain in Austria. Photo: AFP

The Zittel hut atop the Hoher Sonnblick moutain in the Austrian Alps is being damaged by thawing permafrost. Many such huts, and mountain trails, are crumbling, which is bad news for a country reliant on alpine tourism. Photo: AFP


A view from the summit of the Hoher Sonnblick mountain across the Fleiss Glacier, which like others is experiencing rapid ice melt because of climate change. Photo: AFP

Cracks in the facade of the weather station atop the Zittel hut in the Austrian Alps. Photo: AFP

Georg Unterberger, in charge of mountain refuges and trails at the Austrian Alpine club, says the cost of keeping up trails has doubled in the last five years. Photo: AFP

The old weather tower on top of the Zittel hut. Photo: AFP

The Sonnblick Observatory, opened in 1886, has recorded temperatures for 138 years straight. Photo: AFP

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Lifestyle

Travel & Leisure

Thawing permafrost has damaged 50,000km of mountain paths, making them and many of the alpine refuges that summer hikers sleep in dangerous


Thawing permafrost has damaged 50,000km of mountain paths, making them and many of the alpine refuges that summer hikers sleep in dangerous.


Climate change

Austria