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A man stands next to snow-covered card stucked on a road.

As unprecedented snowfall thawed at a popular Pakistan mountain resort, rescued tourists were found reckoning with the deaths of 22 fellow travellers in a frozen traffic jam.

"We didn't get any type of alert from society, from the government, from Google, from the news, from the weather," said 18-year-old Duaa Kashif Ali, a tourist from Islamabad.

The mountain-perch town -- 70 kilometres (45 miles) northeast of Islamabad -- has long been a favourite for tourists, who swarmed to see vistas dusted with fresh snowfall this week.

Roads were jammed with traffic from some 100,000 visitors when a blizzard dumped four feet (1.2 metres) of snow from Friday onwards.

Stuck in their cars overnight, 22 people died from the cold or carbon monoxide poisoning from exhaust fumes. Among them were 10 children.