The tourists were traveling by car Wednesday in Maytas when they became stuck, Xinhua reported.
Ghulahazi Islamgaz, a driver from the Maytas emergency rescue base, said transportation authorities had closed the highway the tourists were using because of poor visibility.
Snowplows reached the tourists at about 2 a.m. Thursday, Islamgaz said.
The highway reopened at 10 a.m.
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Bus attack in Pakistan kills eight