A Nepali Sherpa guide has been rescued from Everest after surviving about a week on the slopes of the world's highest mountain without food or oxygen in a rare case of survival in such conditions, a hiking official said on Thursday.

A Nepali climbing guide who went missing on Mount Everest for six days and was feared dead has been found alive after crawling back to Base Camp, officials told AFP on Thursday.

Rescuers say a Sherpa guide was found alive a week after he went missing on Mount Everest