Mount Cermis has an unenviable reputation as the site of a number of serious accidents, our correspondent adds.
BBC: Italy: Russian tourists die in snowmobile accident
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The accident took place in at 2, 000m (6, 500ft) above sea level on the slopes of Mount Cermis, in the Fiemme Valley.
BBC: Italy: Russian tourists die in snowmobile accident
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The incident comes hours after a group of Russian tourists died when the snowmobile they were travelling in overturned on an unlit black run on Mount Cermis, in the same area.